EP3764171A1 - Anzeigemechanismus eines uhranzeigewerts - Google Patents

Anzeigemechanismus eines uhranzeigewerts Download PDF

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Publication number
EP3764171A1
EP3764171A1 EP20184872.8A EP20184872A EP3764171A1 EP 3764171 A1 EP3764171 A1 EP 3764171A1 EP 20184872 A EP20184872 A EP 20184872A EP 3764171 A1 EP3764171 A1 EP 3764171A1
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EP
European Patent Office
Prior art keywords
tens
wheel
mobile
units
ball bearing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20184872.8A
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English (en)
French (fr)
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EP3764171B1 (de
Inventor
Quentin Gubler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle SA
Original Assignee
Manufacture et Fabrique de Montres et Chronometres Ulysse Nardin Le Locle SA
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Publication of EP3764171A1 publication Critical patent/EP3764171A1/de
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped

Definitions

  • the present invention relates to the field of watchmaking. It relates more particularly to a mechanism for displaying a horological value composed of two digits, which makes it possible to maximize the size of the digits.
  • a date display mechanism of the standard type comprises a date disc, typically annular in shape, bearing a series of numbers from 1 to 31 visible sequentially through an aperture in the dial.
  • This arrangement is very limited in the size of the digits that can be displayed and, in order to solve this problem, various so-called "big date” displays have been developed in order to improve readability.
  • these devices include a tens disc, bearing numbers representing the tens of the date, as well as a units disc bearing the figures representing the units of the date.
  • the displayed date therefore consists of a number carried by the units disc as well as a number (or, as an alternative to the number "0", a space) carried by the tens disc, these two figures appearing through the one or two counters.
  • Other more complicated arrangements are also known, but are not particularly relevant with respect to the present invention and will therefore not be discussed here.
  • the aim of the invention is therefore to provide a display mechanism in which the aforementioned defects are at least partially overcome.
  • said units programming wheel is arranged to cooperate with said unit mobile by means of a first self-locking gear, and said tens programming wheel is arranged to cooperate with said tens wheel via a second self-locking gear.
  • Said tens mobile is pivoted about said first axis of rotation by means of a tens ball bearing and said units mobile is pivoted about said first axis of rotation by means of a units ball bearing, a first of said tens ball bearing and said units ball bearing being mounted on a bracket for attachment to a frame member, a second of said tens ball bearing and said unit ball bearing being mounted between said mobile of tens and said mobile of units.
  • These constructions allow the use of disks of units and tens of relatively large size, the use of self-locking teeth being able to avoid the use of jumpers, which are energy intensive. Consequently, the driving torque is not too high, which allows the date indication or other information to occupy a relatively large area, especially when the figures are at 3 o'clock relative to the first axis. . Furthermore, these constructions can be designed with a relatively small number of axes of rotation and without crowns (if desired), which limits the number of bearings required and the space required in the movement, and, in combination with the arrangement specific components rotated around the first axis, facilitates assembly of the mechanism, including indexing the various components.
  • said mechanism further comprises an additional control wheel which is pivoted about the same axis of rotation as said control wheel and is arranged to be driven by said control wheel and to drive said programming wheels, said additional control wheel being indexable relative to said control wheel at a rate of said step of 1 / n turn by means of a jumper, which therefore ensures discreet relative angular positioning, a manual correction member being arranged to be able to pivot said control wheel additional with respect to said control wheel. A correction of the displayed value can thus be carried out in discrete steps, in both directions, while maintaining the synchronization of the mechanism.
  • said input wheel is arranged to cooperate with said control wheel by means of a third gear self-locking, which ensures the training and positioning of the control wheel without resorting to a jumper, and avoids double jumps.
  • said first axis of rotation is intended to be disposed at the center of a basic movement, which makes it possible to maximize the surface occupied by the figures.
  • said tens programming wheel is arranged to cooperate with said tens mobile by means of yet another self-locking gear, and / or said units programming wheel is arranged to cooperate with said units mobile via the intermediary of yet an additional self-locking gear.
  • the training and positioning of the mobiles in question can thus be provided without any jumper, if desired.
  • said input wheel is pivoted about said first axis of rotation and intended to be driven by a basic movement, which is preferably mechanical.
  • the mechanism comprises a second axis of rotation around which said control wheel, said units programming wheel and said tens programming wheel are pivoted.
  • the number of axes in the mechanism can thus be minimized.
  • the invention also relates to a watch movement comprising a display mechanism as defined above.
  • At least one, preferably each, of the units disc and of the tens disc has an outer diameter which is greater than or equal to 75%, preferably greater than or equal to 80%, preferably greater than or equal to 90% of the diameter of a circle of maximum diameter which fits entirely inside the periphery of said movement.
  • said movement further comprises at least one time indicator hand which is arranged coaxially with said first axis of rotation, the axis or barrel of this hand passing, for example, through corresponding openings with which the moving parts mounted around are provided. of the first axis.
  • This movement can, of course, be incorporated into a timepiece such as a pocket watch, a wristwatch or the like.
  • said indexing of said step d) can comprise the sub-step of: d1) Secure assembly elements to said wheel (that is to say the tens wheel or the ones wheel, as the case may be) and to said disk (that is to say the tens disk or the drives disk, if applicable).
  • said assembly elements comprise pins, which are preferably driven into the corresponding elements to which they are secured.
  • the figure 1 shows overviews of an embodiment of a display mechanism of a horological value 1 according to the invention, which has been constructed in the form of a large date display mechanism.
  • a display mechanism of a horological value 1 which has been constructed in the form of a large date display mechanism.
  • other displays are possible, such as a display of the number of the week, the month, the year, the hours, or the like.
  • the modifications made to the mechanism illustrated and described below to provide a display of other horological values are, of course, within the abilities of those skilled in the art. There is therefore no need to describe them in detail.
  • the figure 1 is used in particular to identify the various axes in order to simplify the interpretation of the section views of the various levels of the construction represented by the figures 3 to 11 .
  • the figure 2 illustrates, on an exaggerated vertical scale, a side view of part of mechanism 1, in order to identify the various levels N1 to N9.
  • the figures 3 to 11 represent sectional views through each level N1 to N9 respectively, defined according to the corresponding lines illustrated on the figure 2 .
  • each mobile will be identified by a reference sign made up of two digits, the first of which represents the level and the second represents the axis. Therefore, the input wheel 21 is at level 2 rotating around axis A1, wheel 13 at level 1 around axis A3, etc.
  • Elements such as pins, axial extensions, etc., which extend from one level to another are identified by reference signs, one of the digits of which corresponds to one of the levels in question. Thanks to this encoding of reference signs, it is not necessary to specify in length and width the level and the axis of each element, which simplifies the reading.
  • a minor exception to this principle is found on the figure 14 , which represents an inverse construction to that of the figure 13 , but still keep the same reference signs for the elements in question in order to facilitate understanding and to keep only one reference sign per functional element.
  • the axes A1 to A5 are geometrical axes, the pivoting of the various elements taking place by means of ad hoc means such as shafts, guns, ball bearings, etc., in a known manner.
  • the time display members may share the same axis, their shafts and barrels passing through. through the center of the elements of mechanism 1 which pivot around the same axis.
  • Axis A3 corresponds to the “second axis” of the claims.
  • Mechanism 1 can, of course, be modular, taking place on the dial side of a basic movement, or can be built in an integrated manner.
  • Said force input is an input wheel 21, which is integral in rotation with an hour wheel in the present case, arranged to perform one revolution per twelve hours. Other arrangements are also possible.
  • This input wheel 21 has four effective teeth on a base of 31 teeth.
  • the wheel has four hollow teeth 21a at its periphery, defining said effective teeth, three long teeth 21b (conventional) each located between each pair of adjacent hollow 21a, the outer hollows 21a being connected by a locking surface 21c at substantially constant radius.
  • This locking surface 21c occupies the place of the 27 effective "missing" teeth. Thanks to the arrangement which has just been described, it is the number of tooth hollows 21a which corresponds to the number of effective teeth instead of the number of vertices, and any gear calculation is therefore carried out with respect to the number of hollow 21a. In simple terms, the four hollows 21a drive a first pinion 22 at the rate of four steps of its toothing; therefore, the number of effective teeth is four.
  • the input wheel 21 therefore cooperates with the first pinion 22, which has eight teeth, so that, on each rotation of the input wheel 21, the first pinion 22 makes a half turn, therefore a full turn by day in two discreet 180 ° steps which take place around 12 noon and midnight.
  • the first pinion 22 is not cooperating with the four effective teeth of the input wheel 21, the flanks of two of its adjacent teeth can slide on the locking surface 21c, which holds the first pinion 22 in its angular position.
  • the assembly of the input wheel 21 and of the first pinion 22 therefore constitutes a self-locking gear, the locking surface 21c ensuring the positioning of the pinion 22 without requiring a jumper.
  • self-locking gears keep power consumption to a minimum and avoid double-jumps during training.
  • a second pinion 12 located at level N1 ( figure 3 ) has climbed.
  • This second pinion 12 has two effective teeth on a basis of eight teeth, these two effective teeth being constituted by two tooth hollows 12a separated by a conventional tooth 12b, the rest of the periphery of the pinion being constituted by a locking surface 12c with constant radius.
  • the second pinion 12 cooperates with a control wheel 13 having 62 conventional teeth.
  • the control wheel 13 advances at the rate of two steps of its toothing (thanks to the two effective teeth of the second pinion 12), the input wheel 21 being arranged relative to the hour and minute hands so that the second pinion 12 drives the control wheel 13 around midnight.
  • the control wheel 13 thus performs a complete revolution in 31 days.
  • control wheel 13 is designed and arranged to be driven at a rate of steps of 1 / n revolution under the direct or indirect control of the input wheel 21, n being a non-zero natural number. .
  • n being a non-zero natural number.
  • 1/4 or 1/31 turn per step is usual; for a week number display, 1/4 or 1/53 turn per step would be particularly suitable.
  • the teeth of the drive wheel 13 cooperate with the locking surface 12c of the second pinion 12 in order to angularly position said drive wheel 13 when it is not in position. being trained.
  • the control wheel 13 is integral in rotation with a second toothing 23a, having 31 teeth in the form of columns or the like (for example, pins) extending parallel to each other from the upper face of the control wheel.
  • control 13 During normal operation of the mechanism, the toothing 23bis is made integral in rotation of an additional control wheel 23 by means of a jumper 23b, 23c which is carried by the additional control wheel 23.
  • the jumper comprises a substantially rigid element 23c, which extends radially, the apex of which penetrates into the teeth 23bis, and a substantially flexible element 23b, which takes the form of a flexible guide.
  • the jumper is designed and arranged so as to exert a force large enough to be secured in rotation to the toothing 23bis during the automatic drive (by the basic movement) of the date, but small enough to be deindexed in rotation from the toothing 23a during manual training (by the user, during a correction) of the date; the additional control wheel 23 can therefore be integral with or deindexed in rotation with the control wheel 13.
  • the additional control wheel 23 comprises a toothing of 62 teeth, intended to be in kinematic connection with a manual correction member (not shown) via an appropriate correction system (not shown).
  • Such systems are well known to those skilled in the art and should not be described in detail here.
  • the toothing 23bis serves as a guide bearing for the additional control wheel 23 which comprises an inner wall 23f extending over an arc of a circle of more than 180 °, in particular of around 270 °. Consequently, this wall 23f can slide on the teeth 23a, and the additional control wheel 23 is thus guided radially.
  • the additional control wheel 23 can be a crown having an internal toothing which cooperates with a conventional jumper mounted on the control wheel 13, said crown being pivoted in an ad hoc manner on the control wheel 13.
  • the additional control wheel 23 carries a plurality of pins 23a which make it integral in rotation with a unit programming wheel 33.
  • a unit programming wheel 33 any other suitable means for securing these two wheels 23, 33 in rotation can be used.
  • the units programming wheel 33 has, based on 62 effective teeth, 60 effective teeth as well as a locking surface 33c corresponding to the two "missing" effective teeth.
  • This wheel 33 and a pinion 34 with eight effective teeth form a self-locking gear arranged so as to drive the pinion 34 in rotation at a rate of a quarter of a turn at the end of each day, except one day out of 31, which corresponds to the transition between indications "31" and "01".
  • the locking surface 33c prevents any rotation of the pinion 34 in the same manner as already described in the context of the self-locking gears mentioned above.
  • the pinion 34 is integral in rotation with a drive wheel for the units 64.
  • This wheel 64 comprises four pairs of hollows 64a separated by a conventional tooth, thus defining four pairs of effective teeth. At each quarter turn, this wheel 64 drives a mobile unit 61, 71 at the rate of two pitches of the toothing of a unit wheel 61 which has 20 effective teeth and is rotatably secured to a unit disc 71 which bears the units digits.
  • the gear between the drive wheel of the units 64 and the wheel of the units 61 constitutes a self-locking gear which functions analogously to the self-locking gears described above.
  • the disk of the units 71 is pivoted on a ball bearing (see below) and has ten fingers 71a extending from its periphery and in its plane, the part of the periphery which lies between these fingers 71a having a radius constant.
  • This disc is positioned by a pair of jumpers 101 which, when the unit disc 71 is in a stable position, are in contact with two of said fingers 71a, one of the jumpers preventing clockwise rotation, the other preventing counterclockwise rotation.
  • the tops of the jumpers 101 are located opposite a part of the periphery of the disc 71 at constant radius and oppose no (or little) resistance.
  • jumpers 101 are optional and can therefore be absent, in particular if the angular play of the disc of the units 71 generated by the self-locking gears is small enough to avoid any angular “floating” of said disc 71.
  • the tens programming wheel 43 has six pairs of effective teeth 43a on a basis of 62 effective teeth, with locking surfaces 43c lying between each pair of effective teeth 43a. These pairs of effective teeth 43a are arranged at appropriate positions on the periphery of the wheel 43 in order to drive in rotation a pinion 45 with eight effective teeth at least during the transitions between the indications “09” and “10”, “19”. "And” 20 “,” 29 “and” 30 ", as well as” 31 “and” 01 ". Again, the gear between the wheel 43 and the pinion 45 is self-locking, as described above, the pinion 45 making a quarter turn at each passage of a pair of effective teeth 43a.
  • the series of digits for the tens includes the sequence “0, 1, 1, 2, 2, 3” once. Therefore, there are two additional trainings, to make the transitions between the first digit "1" and the second digit "1", as well as between the first digit "2" and the second digit "2", at ad hoc times.
  • the sequence of digits and thus the number of workouts may be different. It is, for example, possible to provide one of the other following sequences: "0, 1, 2, 3", “0, 1, 1, 2, 3", “0, 0, 1, 1, 2, 2, 3 ",” 0, 1, 2, 3, 0, 1, 2, 3 "or any other ad hoc sequence.
  • Pinion 45 is rotatably integral with a tens drive wheel 55, which is similar in shape to the units drive wheel 64, except that its diameter is greater. At each quarter turn, this wheel 55 drives a tens mobile 51, 81 at the rate of two pitches of the teeth of a tens wheel 51 which has 12 effective teeth and is rotatably secured to a tens disk 81 which carries the tens digits. Again, the gear between the tens drive wheel 55 and the tens wheel 51 is self-locking, as described above.
  • the tens disc 81 has six fingers 81a extending from its periphery and in its plane, the part of the periphery which lies between these fingers 81a having a constant radius.
  • a pair of jumpers 201 functions in the same way as the pair of jumpers 101 of the drive disc 71, mutatis mutandis, and therefore need not be described in detail.
  • the two discs 71, 81 have outside diameters which are substantially identical, this diameter corresponding to more than 90% of the diameter of a circle of maximum diameter which fits entirely inside the periphery of the movement. base and / or dial 91.
  • the latter which is supported at its periphery by a support 6 in an arc of a circle, is illustrated on figure 11 , by the view in section through the mean plane of the dial 91, this figure showing the window 91 has a relatively large size which reveals the figures composing the date (that is to say a number or a space carried by the tens disc 81 as well as a number carried by the units disc 71) at 3 o'clock in relation to axis A1.
  • the counter 91a can, alternatively, be located at 9 o'clock or elsewhere in relation to the axis A1, but an arrangement at 3 o'clock maximizes the size of the digits since the ten digits of the units are arranged in a circle with a greater radius than that of the circle in which the tens digits are arranged, which are typically less numerous. It is further noted that the presence of the dial is not compulsory.
  • the disk of the units 71 can be either transparent or opaque. This arrangement avoids the presence of a perceptible separation between the two digits, the tens digits being provided either on the upper face (dial side) of the tens disc 81, or on its underside (back side) as shown in the figure. patent EP1070996 . In any case, the units digits are typically provided on the upper face (dial side) of the units disc 71.
  • the construction described above only represents a non-limiting embodiment in the specific context of a large date, even if it is particularly advantageous.
  • Those skilled in the art can in particular adapt the gear ratios, according to their needs, to display other horological values.
  • the arrangement of the five axes A1-A5 may be different.
  • the elements mounted on the axis A3 can be distributed over several axes, additional ad hoc members can be provided in order to form all the necessary kinematic connections. Specific variants will be described below, following a description of the assembly of the elements pivoted about the axis A1.
  • a support 3 is provided, integral with a frame element (not shown).
  • This support comprises a disc part 3a, which extends radially at levels 3 and 4, as well as a tubular part 3b (which can alternatively be cylindrical in the case where no shaft crosses it), which extends axially from the internal diameter of the disc part 3a towards the dial 91.
  • This tubular part 3b serves as a support for a tens ball bearing R1, a first part R1a of which is integral with the support 3, being there tightened by means of a retention element such as a screw 5 which is screwed onto the tubular part 3b of the support 3, and of which a second part R1b is secured to the tens wheel 51 (for example, being there chased, riveted, glued, welded or similar).
  • This tens wheel 51 has an extension 51h, of which the tens disk 81 is made integral by means of a plurality of pins 81g serving as assembly elements (in particular two in the illustrated embodiment, but a number higher is also possible).
  • a ball bearing of units R2 comprises a first part R2a fitted around the extension 51h, the second part R2b surrounding this first part, the balls being arranged between these two parts in a known manner.
  • the second part R2b carries the 61 units wheel (which is driven out, riveted, glued, welded or the like around the R2b part) as well as the 71 units disc (which is driven out, riveted, glued, welded or the like around the part R2b). part R2b) which is indexed in rotation with respect to the wheel of the units 61 by means of a plurality of pins 61g.
  • the elements can be joined together by driving, riveting, gluing, welding or any other suitable means. Furthermore, the reverse actions in reverse order are used for disassembling this assembly. In addition, other methods and constructions are possible, in particular with regard to other variants for ensuring the indexing between each wheel 61 respectively 51 and its corresponding disc 71 respectively 81. The method will therefore adapt according to the means. chosen to ensure indexing.
  • the layout of the figure 14 shows an inverse construction, in which the mobile of the units 61, 71 is pivoted on the support 3 by means of the ball bearing of the units R2, while the mobile of the tens 51, 81 is pivoted around the mobile of the units 61, 71 through the tens ball bearing R1. Therefore, the differences between the figure 14 and the figure 13 relate exclusively to the reference signs used to indicate the various elements, the reference signs for each functional element corresponding to those used previously, even if this is not in accordance with the encoding for this figure.
  • the modifications of the kinematics upstream of these two moving parts 61, 71 respectively 51, 81 in order to compensate for these changes are within the abilities of those skilled in the art and therefore should not be described exhaustively.
  • the elements can be joined together by driving, riveting, gluing, welding or any other suitable means.
  • the reverse actions in reverse order are used for disassembling this assembly.
  • other methods and constructions are also possible, as mentioned above. The method will therefore adapt according to the means chosen to ensure the indexing.
  • variant 1 the embodiment of figures 1 to 13 will be referred to as "variant 1". AT new, and in order to facilitate understanding, the same reference signs have been used, even if the encoding of the axis and the level is not always respected.
  • control wheel 13 could have 2 n effective teeth (instead of 62 effective teeth), n being a non-zero natural number, and that the additional control wheel 23 could be separated from the control wheel 13 in steps of 1 / n turn (instead of 1/31 turn) and have 2 n effective teeth (instead of 62 effective teeth), or other, as long as it can be ensured that the programming wheel of the units 33 and the tens programming wheel 43 are adequately driven.
  • This variant makes it possible to change the displayed value more quickly, at the cost of a higher number of parts.
  • the week number can thus be displayed over a very large area, the user having to make a correction at the end of each year so that the numbers "54”, “55”, “56”, “57”, “58” , "59” and "00" are not displayed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Toys (AREA)
EP20184872.8A 2019-07-11 2020-07-09 Anzeigemechanismus eines uhranzeigewerts Active EP3764171B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00904/19A CH716399A1 (fr) 2019-07-11 2019-07-11 Mécanisme d'affichage d'une valeur horlogère, en particulier du quantième.

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EP3764171A1 true EP3764171A1 (de) 2021-01-13
EP3764171B1 EP3764171B1 (de) 2022-04-06

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1070996A1 (de) 1999-07-19 2001-01-24 Girard-Perregaux S.A. Uhr mit Datumsanzeige
CH690869A5 (fr) 1997-08-27 2001-02-15 Jean Marc Wiederrecht Module de quantième pour pièce d'horlogerie.
EP1316859A1 (de) 2001-11-30 2003-06-04 Rolex Sa Verfahren zur Herstellung eines Kalendermechanismus für eine Uhr
EP1555585A1 (de) * 2004-01-16 2005-07-20 Walter Schlup Kalendermechanismus
EP1795977A1 (de) * 2005-12-09 2007-06-13 Glashütter Uhrenbetrieb GmbH Antriebsmechanismus einer Kalenderanzeige für eine Uhr
CN202230308U (zh) * 2011-08-23 2012-05-23 天津海鸥表业集团有限公司 一种手表显示盘的固定装置
EP2490084A1 (de) 2011-02-17 2012-08-22 Glashütter Uhrenbetrieb GmbH Datumsmechanismus
US8406087B2 (en) * 2009-04-30 2013-03-26 Jens Schneider Watch
EP2674818A1 (de) * 2012-06-14 2013-12-18 Blancpain SA. Anzeige auf Schwungmasse eines Uhrwerkes mit automatischem Aufzug

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH690869A5 (fr) 1997-08-27 2001-02-15 Jean Marc Wiederrecht Module de quantième pour pièce d'horlogerie.
EP1070996A1 (de) 1999-07-19 2001-01-24 Girard-Perregaux S.A. Uhr mit Datumsanzeige
EP1316859A1 (de) 2001-11-30 2003-06-04 Rolex Sa Verfahren zur Herstellung eines Kalendermechanismus für eine Uhr
EP1555585A1 (de) * 2004-01-16 2005-07-20 Walter Schlup Kalendermechanismus
EP1795977A1 (de) * 2005-12-09 2007-06-13 Glashütter Uhrenbetrieb GmbH Antriebsmechanismus einer Kalenderanzeige für eine Uhr
US8406087B2 (en) * 2009-04-30 2013-03-26 Jens Schneider Watch
EP2490084A1 (de) 2011-02-17 2012-08-22 Glashütter Uhrenbetrieb GmbH Datumsmechanismus
CN202230308U (zh) * 2011-08-23 2012-05-23 天津海鸥表业集团有限公司 一种手表显示盘的固定装置
EP2674818A1 (de) * 2012-06-14 2013-12-18 Blancpain SA. Anzeige auf Schwungmasse eines Uhrwerkes mit automatischem Aufzug

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CH716399A1 (fr) 2021-01-15

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