CA1161404A - Insulated drinking cups - Google Patents
Insulated drinking cupsInfo
- Publication number
- CA1161404A CA1161404A CA000326505A CA326505A CA1161404A CA 1161404 A CA1161404 A CA 1161404A CA 000326505 A CA000326505 A CA 000326505A CA 326505 A CA326505 A CA 326505A CA 1161404 A CA1161404 A CA 1161404A
- Authority
- CA
- Canada
- Prior art keywords
- collar
- wall
- cup
- lip
- cups
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
- B65D1/26—Thin-walled containers, e.g. formed by deep-drawing operations
- B65D1/265—Drinking cups
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Table Devices Or Equipment (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Stackable Containers (AREA)
- Materials For Medical Uses (AREA)
- Wrappers (AREA)
- Packages (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A nestable cup of thermoplastics material having a turned-over downwardly extending collar circumjacent the wall of the cup at its upper lip. The collar includes a downwardly and outwardly extending shoulder between an upper portion and a lower portion of the collar which increases the rigidity of the collar so that it remains spaced from the wall when it is gripped by the user. The collar extends between 20 and 30 mm.
below the lip of the cup.
A nestable cup of thermoplastics material having a turned-over downwardly extending collar circumjacent the wall of the cup at its upper lip. The collar includes a downwardly and outwardly extending shoulder between an upper portion and a lower portion of the collar which increases the rigidity of the collar so that it remains spaced from the wall when it is gripped by the user. The collar extends between 20 and 30 mm.
below the lip of the cup.
Description
1 lB1404 IMPROVEMENTS IN OR RELATING TO DRINKING
CUPS AND METHODS OF MAKING DRINKING CUPS
The present invention relates to nestable cups, par-ticularly those cups in which hot beverages, such as coffee are drunk, and to stacks of such caps, each cup containing one or more beverage ingredients.
It has long been known that a single walled cup does not present a very good thermal barrier to insulate the fingers of a person holding such cups containing a hot beverage from the heat given out by that beverage.
Various proposals have been made for cups which could provide better heat insulation, such as "double walled" cups.
United States Patent No. 2,493,633, and British Patent No.
1,325,230 both describe and illustrate double-walled containers.
These containers suffer from the disadvantage that a considerable amount of material is required for their manufacture.
Alternatively, cups have been provided with holders or ear-like handles.
The present invention provides a nestable cup which can be held by the user when it contains hot water or hot bev-erage and which is simple and economic to manufacture.
According to the present invention, there is provided a nestable cup formed of thermoplastics material and comprising a base, a wall integral with and upstanding from the base to de-fine therewith a reservoir for liquid, and a turned-over, out-wardly and downwardly extending collar circumjaoent the wall and spaced therefrom with the juncture of the wall and collar provid-ing a lip, the collar having an upper portion and a lower por-tion and an outwardly and downwardly extending shoulder there-between, the shoulder merging at shallow angles with the upper and lower portions and increasing the rigidity of the collar l 1614~4 such that when the collar is normally gripped by a user, it remains spaced from the upstanding wall, the collar extending a distance between 20 and 30 mm. below the lip to facilitate gripping by the user.
In preferred construction, the distance between the lip and the shoulder is approximately 1/3 the width of the collar.
While any thermoplastics material may be used to form the cup, currently commercially suitable materials include poly-styrene, acrylonitrile/butadiene/styrene, and polypropyleneresins, optionally filled with, for example, talc or chalk for additional strength. The use of barrier resins or laminates/
coextrusions is preferred since they improve the shelf life of beverage ingredients. Because of the relatively low soften-ing point polyvinyl chloride and some acrylonitrile/butadiene/
styrenes cannot be used for cups from which very hot beverages are to be drunk, although they can be used for warm beverages.
When the cups are stacked the top cup can be fitted with a plug or snap-on cap to retain the beverage ingredient in the cup. Alternatively, a "dummy" cup which does not contain any ingredient may be useful. A plug is to be preferred to a snap-on cap when the stack is wrapped since the plug allows the enveloping film to be drawn into the top aperture region of the stack of cups and enables adequate top pressure to be obtained.
Preferably the wrapped stack should be under a top to bottom pressure sufficient to prevent seepage of the beverage ingred-ients from the cups. Preferred methods of wrapping are des-cribed in United Kingdom Patent No. 1,539,729.
Specific embodiments of the invention will now be described with reference to the accompanying drawings in which:
Figure 1 is a side elevation, partially in section, of an embodiment of the cupi l 161~04 Figure 2 is an enlarged cross-sectional view of the tops of two cups of the type shown in Figure 1 in a nesting xelationship;
Figure 3 shows a manufacture of a cup of the present invention with the apparatus in side view; and Figure 4 shows from above a batch of twelve cups being made in accordance with the method of manufacture shown in Fig-ure 3.
Figure 1 shows the cup generally indicated at 1 hav-ing a generally cylindrical base 2 with an upstanding integral wall formed around its periphery. The free end of the wall 3 is turned over to form a lip 5 and an outwardly and downwardly extending collar 6 which preferably has a depth below the lip of 20 to 30 mm.
The collar 6 extends circumjacent the top of the upward-ly extending portion of the wall 3 and is spaced therefrom. The collar 6 may be provided with a ring of vertically extending ribs 7 extending around its centre portion to increase the rigidity of the collar.
It will be appreciated that the shape and thickness of the collar may be considerably varied from that shown in Figures 1 and 2 and that the ribs 7 may be omitted. The essential re-quirement for the collar 6 is that when it is gripped by a user it remains spaced from the upwardly extending portion of the wall 3.
The collar 6 has an upper portion 8 which extends downwardly parallel to the upwardly extending portion of wall 3 and a flared skirt portion 9 which diverges away from the up-wardly extending portion of wall 3.
The collar 6 has an outwardly extending and downwardly inclined shoulder 13 between the upper portion 8 and lower por-tion 9. It will be noted in this case that the lower portion 9 , ~ -.~
"
extends vertically. The provision of the shoulder 13 increases the rigidity of the collar and indeed the provision of such a shoulder alone, without the ribs 7, can provide sufficient rigidity in the collar.
The lower portion 9 of the collar may be provided with indents, not shown, which provide gripping points for the user's fingers and increase the rigidity of the lower portion 9 of the collar 6.
The cup 1 may be further provided with an inwardly extending annular internal shoulder 10, which is shown in Fig-ure 1, for supporting a like cup in a nesting relationship.
The base 2 of the cup 1 may have a central dome shaped portion (not shown) which is provided both to give strength to the cup 1 and to resist inversion of the base 2, which inversion can occur when a hot liquid is poured into the cup 1.
When stacked the bases 2 of the nested cups together define a space therebetween. This space can contain one or more ingredients, such as coffee powder, for a beverage when the cup is stacked.
It will be noted that the flared portion 9 of the collar 6 allows the upper cup to be nested in the lower cup in such a way as to r~adily allow the lower cup to be withdrawn from the stack.
In use a hot liquid is poured into the cup 1 to make a beverage from the dried ingredient, not shown, contained in the cup. The user can then grip the cup by means of the collar 6. The arrangement of the shape and rigidity of the collar is such that when the cup is gripped under normal pressures the collar remains spaced from the upwardly extending portion of the wall 3. The air within this space is a reasonably good heatinsulator and thus to all intents and purposes heat is only conveyed from the hot beverage to the user's fingers by conduc-l ~61404 tion of the heat from the liquid up the upwardly extending por-tion of the wall 3, through the lip 5 and down the collar 6.
It will be appreciated that the length of this path is considerably greater than the thickness of a normal thermoplas-tics cup and therefore the cup is considerably more comfortable to hold than a traditional thermoplastics cup~
It will be noted that in all of the constructions the lip 5 offers an improved drinking surface over that of many known cups, in particular because there is no need when making the cups to roll the rim as is normally an additional operation in those cups which are manufactured by thermoforming.
The drinking surface can be further improved if the ribs 7 are omitted and preferably the distance between the lip 5 and the shoulder is approximately 1/3 the width of the collar 6.
Figures 3 and 4 show a method of thermoforming the cups of Figures 1 and 2. In Figures 3 and 4 a sheet of thermoplastics material 14 is positioned under a heater 15 which heats the sheet 14 radiantly. This is shown in position A. The sheet of material 14 is then gripped at its edges by means not shown, projected forward into a position above a water cooled female mould 16 (position B).
A clamp 17 is then applied around the cavity 18 of the mould 16. The positiOn of clamp 17 in relation to mould 16 depends on whether the material from an area of sheet larger than that of the mould aperture is required to make the forming.
The mould 16 is then moved upwardly towards the sheet material 14 and during this operation air is blown from both inside and outside the mould 16. Air vents, not shown, are provided in the mould 16 for this purpose. The air pressure forces the sheet of material 14 into a position shown at C. A heated mechanical punch (not shown) shaped to the interior of the mould forces l 16140~
the material 14 down into the mould 16 where it adopts the shape of the interior of the mould. Air is expelled from the mould to the air vents (not shown). If desired, the explusion of air can be assisted by the use of vacuum exhaustionO
During a further stage D the forming 19 is cut from the sheet 14 and the remaining part can be reprocessed. The process described is an intermittent process and whilst one part of a sheet of material is being heated another part is being thermoformed and in another part formings are being cut from the sheet.
It will be appreciated that it is the unitary construc-tion of the cups 1 which facilitate their easy construction.
It will further be appreciated that alternatively the cups can be formed by injection moulding or injection blow moulding.
CUPS AND METHODS OF MAKING DRINKING CUPS
The present invention relates to nestable cups, par-ticularly those cups in which hot beverages, such as coffee are drunk, and to stacks of such caps, each cup containing one or more beverage ingredients.
It has long been known that a single walled cup does not present a very good thermal barrier to insulate the fingers of a person holding such cups containing a hot beverage from the heat given out by that beverage.
Various proposals have been made for cups which could provide better heat insulation, such as "double walled" cups.
United States Patent No. 2,493,633, and British Patent No.
1,325,230 both describe and illustrate double-walled containers.
These containers suffer from the disadvantage that a considerable amount of material is required for their manufacture.
Alternatively, cups have been provided with holders or ear-like handles.
The present invention provides a nestable cup which can be held by the user when it contains hot water or hot bev-erage and which is simple and economic to manufacture.
According to the present invention, there is provided a nestable cup formed of thermoplastics material and comprising a base, a wall integral with and upstanding from the base to de-fine therewith a reservoir for liquid, and a turned-over, out-wardly and downwardly extending collar circumjaoent the wall and spaced therefrom with the juncture of the wall and collar provid-ing a lip, the collar having an upper portion and a lower por-tion and an outwardly and downwardly extending shoulder there-between, the shoulder merging at shallow angles with the upper and lower portions and increasing the rigidity of the collar l 1614~4 such that when the collar is normally gripped by a user, it remains spaced from the upstanding wall, the collar extending a distance between 20 and 30 mm. below the lip to facilitate gripping by the user.
In preferred construction, the distance between the lip and the shoulder is approximately 1/3 the width of the collar.
While any thermoplastics material may be used to form the cup, currently commercially suitable materials include poly-styrene, acrylonitrile/butadiene/styrene, and polypropyleneresins, optionally filled with, for example, talc or chalk for additional strength. The use of barrier resins or laminates/
coextrusions is preferred since they improve the shelf life of beverage ingredients. Because of the relatively low soften-ing point polyvinyl chloride and some acrylonitrile/butadiene/
styrenes cannot be used for cups from which very hot beverages are to be drunk, although they can be used for warm beverages.
When the cups are stacked the top cup can be fitted with a plug or snap-on cap to retain the beverage ingredient in the cup. Alternatively, a "dummy" cup which does not contain any ingredient may be useful. A plug is to be preferred to a snap-on cap when the stack is wrapped since the plug allows the enveloping film to be drawn into the top aperture region of the stack of cups and enables adequate top pressure to be obtained.
Preferably the wrapped stack should be under a top to bottom pressure sufficient to prevent seepage of the beverage ingred-ients from the cups. Preferred methods of wrapping are des-cribed in United Kingdom Patent No. 1,539,729.
Specific embodiments of the invention will now be described with reference to the accompanying drawings in which:
Figure 1 is a side elevation, partially in section, of an embodiment of the cupi l 161~04 Figure 2 is an enlarged cross-sectional view of the tops of two cups of the type shown in Figure 1 in a nesting xelationship;
Figure 3 shows a manufacture of a cup of the present invention with the apparatus in side view; and Figure 4 shows from above a batch of twelve cups being made in accordance with the method of manufacture shown in Fig-ure 3.
Figure 1 shows the cup generally indicated at 1 hav-ing a generally cylindrical base 2 with an upstanding integral wall formed around its periphery. The free end of the wall 3 is turned over to form a lip 5 and an outwardly and downwardly extending collar 6 which preferably has a depth below the lip of 20 to 30 mm.
The collar 6 extends circumjacent the top of the upward-ly extending portion of the wall 3 and is spaced therefrom. The collar 6 may be provided with a ring of vertically extending ribs 7 extending around its centre portion to increase the rigidity of the collar.
It will be appreciated that the shape and thickness of the collar may be considerably varied from that shown in Figures 1 and 2 and that the ribs 7 may be omitted. The essential re-quirement for the collar 6 is that when it is gripped by a user it remains spaced from the upwardly extending portion of the wall 3.
The collar 6 has an upper portion 8 which extends downwardly parallel to the upwardly extending portion of wall 3 and a flared skirt portion 9 which diverges away from the up-wardly extending portion of wall 3.
The collar 6 has an outwardly extending and downwardly inclined shoulder 13 between the upper portion 8 and lower por-tion 9. It will be noted in this case that the lower portion 9 , ~ -.~
"
extends vertically. The provision of the shoulder 13 increases the rigidity of the collar and indeed the provision of such a shoulder alone, without the ribs 7, can provide sufficient rigidity in the collar.
The lower portion 9 of the collar may be provided with indents, not shown, which provide gripping points for the user's fingers and increase the rigidity of the lower portion 9 of the collar 6.
The cup 1 may be further provided with an inwardly extending annular internal shoulder 10, which is shown in Fig-ure 1, for supporting a like cup in a nesting relationship.
The base 2 of the cup 1 may have a central dome shaped portion (not shown) which is provided both to give strength to the cup 1 and to resist inversion of the base 2, which inversion can occur when a hot liquid is poured into the cup 1.
When stacked the bases 2 of the nested cups together define a space therebetween. This space can contain one or more ingredients, such as coffee powder, for a beverage when the cup is stacked.
It will be noted that the flared portion 9 of the collar 6 allows the upper cup to be nested in the lower cup in such a way as to r~adily allow the lower cup to be withdrawn from the stack.
In use a hot liquid is poured into the cup 1 to make a beverage from the dried ingredient, not shown, contained in the cup. The user can then grip the cup by means of the collar 6. The arrangement of the shape and rigidity of the collar is such that when the cup is gripped under normal pressures the collar remains spaced from the upwardly extending portion of the wall 3. The air within this space is a reasonably good heatinsulator and thus to all intents and purposes heat is only conveyed from the hot beverage to the user's fingers by conduc-l ~61404 tion of the heat from the liquid up the upwardly extending por-tion of the wall 3, through the lip 5 and down the collar 6.
It will be appreciated that the length of this path is considerably greater than the thickness of a normal thermoplas-tics cup and therefore the cup is considerably more comfortable to hold than a traditional thermoplastics cup~
It will be noted that in all of the constructions the lip 5 offers an improved drinking surface over that of many known cups, in particular because there is no need when making the cups to roll the rim as is normally an additional operation in those cups which are manufactured by thermoforming.
The drinking surface can be further improved if the ribs 7 are omitted and preferably the distance between the lip 5 and the shoulder is approximately 1/3 the width of the collar 6.
Figures 3 and 4 show a method of thermoforming the cups of Figures 1 and 2. In Figures 3 and 4 a sheet of thermoplastics material 14 is positioned under a heater 15 which heats the sheet 14 radiantly. This is shown in position A. The sheet of material 14 is then gripped at its edges by means not shown, projected forward into a position above a water cooled female mould 16 (position B).
A clamp 17 is then applied around the cavity 18 of the mould 16. The positiOn of clamp 17 in relation to mould 16 depends on whether the material from an area of sheet larger than that of the mould aperture is required to make the forming.
The mould 16 is then moved upwardly towards the sheet material 14 and during this operation air is blown from both inside and outside the mould 16. Air vents, not shown, are provided in the mould 16 for this purpose. The air pressure forces the sheet of material 14 into a position shown at C. A heated mechanical punch (not shown) shaped to the interior of the mould forces l 16140~
the material 14 down into the mould 16 where it adopts the shape of the interior of the mould. Air is expelled from the mould to the air vents (not shown). If desired, the explusion of air can be assisted by the use of vacuum exhaustionO
During a further stage D the forming 19 is cut from the sheet 14 and the remaining part can be reprocessed. The process described is an intermittent process and whilst one part of a sheet of material is being heated another part is being thermoformed and in another part formings are being cut from the sheet.
It will be appreciated that it is the unitary construc-tion of the cups 1 which facilitate their easy construction.
It will further be appreciated that alternatively the cups can be formed by injection moulding or injection blow moulding.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A nestable cup formed of thermoplastic material and comprising a base, a wall integral with an upstanding from the base to define therewith a reservoir for liquid, and a turned-over, outwardly and downwardly extending collar circum-jacent the wall and spaced therefrom with the juncture of the wall and collar providing a lip, the collar having an upper portion and a lower portion and an outwardly and downwardly extending shoulder therebetween, the shoulder merging at shallow angles with the upper and lower portions and increasing the rigidity of the collar such that when the collar is normally gripped by a user it remains spaced from the upstanding wall, the collar extending a distance between 20 and 30 mm. below the lip to facilitate gripping by the user.
2. A cup according to claim 1, wherein the distance between the lip and the shoulder is approximately 1/3 the width of the collar.
3. A cup according to claim 1, in which the collar is provided with indents which provide gripping points and increase the rigidity of the collar.
4. A cup according to claim 1, 2 or 3, wherein the upper portion of the collar is parallel with the upstanding wall, and the lower portion of the collar flares outwardly and downwardly with respect to the wall.
5. A cup according to claim 1, in which the wall has an inwardly extending shoulder in the proximity of its base which is capable of supporting another similar cup while provid-ing a space therebetween.
6. A stack of cups, each according to claim 5, and including beverage ingredients in each space between the bases of adjacent cups.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB19969/78A GB1602258A (en) | 1978-05-16 | 1978-05-16 | Insulated drinking cups |
| GB19969/78 | 1978-05-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1161404A true CA1161404A (en) | 1984-01-31 |
Family
ID=10138134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000326505A Expired CA1161404A (en) | 1978-05-16 | 1979-04-27 | Insulated drinking cups |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0005605B1 (en) |
| JP (1) | JPS54150277A (en) |
| AU (1) | AU528933B2 (en) |
| CA (1) | CA1161404A (en) |
| DE (1) | DE2963222D1 (en) |
| DK (1) | DK148173C (en) |
| ES (1) | ES250507Y (en) |
| FI (1) | FI71476C (en) |
| GB (1) | GB1602258A (en) |
| NO (1) | NO151277C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6397610U (en) * | 1986-12-17 | 1988-06-24 | ||
| GB2201581B (en) * | 1987-03-03 | 1991-01-09 | Plastici Articoli Special Ind | Cup for coffee, or similar drinks, formed of synthetic thermoplastics material |
| GB2204478B (en) * | 1987-05-15 | 1991-02-13 | Mono Containers Ltd | Insulated cups |
| FI20020286A (en) * | 2002-02-13 | 2003-08-14 | Stora Enso Oyj | Drinking cup and process for making thereof |
| ITMI20090005A1 (en) * | 2009-01-08 | 2010-07-09 | Novacart Spa | CONTAINER IN PAPER MATERIAL FOR FOOD, FOR EXAMPLE LIQUIDS, IN PARTICULAR DRINKS, AS A GLASS FOR HOT DRINKS |
| FR2956963B1 (en) * | 2010-03-06 | 2012-04-20 | Shivedutt Rughoobur | THIN-WALL BEVERAGE CONTAINER EQUIPPED WITH A TAPPING AND HOLDING TAB AND METHOD OF MANUFACTURING THE SAME |
| GB2563819A (en) * | 2017-05-16 | 2019-01-02 | Aegg Ltd | Containers for food products |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2493633A (en) * | 1946-06-03 | 1950-01-03 | Leon T Mart | Double-walled container |
| FR1376764A (en) * | 1963-09-23 | 1964-10-31 | Illinois Tool Works | Container and lid |
| BE703364A (en) * | 1967-09-01 | 1968-02-01 | ||
| GB1267351A (en) * | 1968-03-08 | 1972-03-15 | Calmec Extruform Ltd | Improvements in plastics containers, methods of producing them and tooling apparatus therefor |
| JPS523980B2 (en) * | 1972-01-13 | 1977-01-31 | ||
| GB1325230A (en) * | 1972-07-14 | 1973-08-01 | Jacobs S A | Drinking cups |
| US4024951A (en) * | 1975-05-12 | 1977-05-24 | Compact Industries, Inc. | Cup and package of cups |
| JPS523980U (en) * | 1975-06-23 | 1977-01-12 | ||
| JPS5217271A (en) * | 1975-07-31 | 1977-02-09 | Iwai Tsusho Kk | Molding device of paper made container |
-
1978
- 1978-05-16 GB GB19969/78A patent/GB1602258A/en not_active Expired
-
1979
- 1979-04-27 CA CA000326505A patent/CA1161404A/en not_active Expired
- 1979-05-04 DE DE7979300771T patent/DE2963222D1/en not_active Expired
- 1979-05-04 EP EP79300771A patent/EP0005605B1/en not_active Expired
- 1979-05-14 FI FI791535A patent/FI71476C/en not_active IP Right Cessation
- 1979-05-14 AU AU46973/79A patent/AU528933B2/en not_active Ceased
- 1979-05-14 ES ES1979250507U patent/ES250507Y/en not_active Expired
- 1979-05-15 DK DK199179A patent/DK148173C/en not_active IP Right Cessation
- 1979-05-15 NO NO791615A patent/NO151277C/en unknown
- 1979-05-15 JP JP5959579A patent/JPS54150277A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| ES250507U (en) | 1980-07-16 |
| ES250507Y (en) | 1981-01-16 |
| GB1602258A (en) | 1981-11-11 |
| EP0005605B1 (en) | 1982-06-30 |
| EP0005605A1 (en) | 1979-11-28 |
| NO791615L (en) | 1979-11-19 |
| DK199179A (en) | 1979-11-17 |
| AU528933B2 (en) | 1983-05-19 |
| FI71476B (en) | 1986-10-10 |
| DE2963222D1 (en) | 1982-08-19 |
| NO151277B (en) | 1984-12-03 |
| DK148173B (en) | 1985-04-22 |
| FI791535A (en) | 1979-11-17 |
| AU4697379A (en) | 1979-11-22 |
| DK148173C (en) | 1985-10-07 |
| FI71476C (en) | 1987-01-19 |
| NO151277C (en) | 1985-03-13 |
| JPH0347843B2 (en) | 1991-07-22 |
| JPS54150277A (en) | 1979-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 20010131 |