EP2744952A1 - Mechanical locking system for floor panels - Google Patents
Mechanical locking system for floor panelsInfo
- Publication number
- EP2744952A1 EP2744952A1 EP12824331.8A EP12824331A EP2744952A1 EP 2744952 A1 EP2744952 A1 EP 2744952A1 EP 12824331 A EP12824331 A EP 12824331A EP 2744952 A1 EP2744952 A1 EP 2744952A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tongue
- locking
- groove
- panels
- edge
- 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
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 27
- 210000002105 tongue Anatomy 0.000 description 56
- 239000000463 material Substances 0.000 description 9
- 239000011162 core material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- -1 linoleum Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2201/00—Joining sheets or plates or panels
- E04F2201/05—Separate connectors or inserts, e.g. pegs, pins, keys or strips
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F2201/00—Joining sheets or plates or panels
- E04F2201/05—Separate connectors or inserts, e.g. pegs, pins, keys or strips
- E04F2201/0523—Separate tongues; Interlocking keys, e.g. joining mouldings of circular, square or rectangular shape
- E04F2201/0547—Separate tongues; Interlocking keys, e.g. joining mouldings of circular, square or rectangular shape adapted to be moved perpendicular to the joint edge
Definitions
- Embodiments of the present invention are particularly suitable for use in floating floors, which are formed of floor panels which are joined mechanically with a locking system integrated with the floor panel, i.e. mounted at the factory, are made up of one or more upper layers of wood or wood veneer, decorative laminate, powder based surfaces or decorative plastic material, an intermediate core of wood-fibre-based material or plastic material and preferably a lower balancing layer on the rear side of the core.
- Floor panels with a surface layer of cork, linoleum, rubber or soft wear layers, for instance needle felt glued to a board, printed and preferably also var ⁇ nished surface and floors with hard surfaces such as stone, tile and similar materials are included.
- Embodiments of the invention may also be used for joining building panels which preferably contain a board material for instance wall panels, ceilings, furniture components and similar.
- Laminate flooring usually comprise a core of a 6-12 mm fibre board, a 0,2-0,8 mm thick upper decorative surface layer of laminate and a 0.1-0.6 mm thick lower balancing layer of laminate, plastic, paper or like material.
- a laminate surface comprises melamine-impregnated paper.
- the most common core material is fibreboard with high density and good stability usually called HDF - High
- Fibreboard - is used as core.
- Laminate floorings are joined mechanically by means of so-called mechanical locking systems. These systems comprise locking means, which lock the panels hori ⁇ zontally and vertically.
- the mechanical locking systems are usually formed by machining of the core of the panel.
- parts of the locking system may be form- ed of a separate material, for instance aluminium or HDF, which is integrated with the floor panel, i.e. joined with the floor panel in connection with the manufacture thereof .
- the main advantages of floating floors with mechanical locking systems are that they are easy to install. They may also easily be taken up again and used once more at a different location.
- front side while the opposite side of the floor panel, facing the sub floor, is called “rear side”.
- rear side The edge between the front and rear side.
- horizontal plane is meant a plane, which extends parallel to the outer part of the surface layer.
- vertical plane perpendicular to the horizontal plane.
- vertical locking is meant locking parallel to the vertical plan.
- horizontal locking is meant locking parallel to the horizontal plane .
- locking systems co acting connecting elements, which connect the floor panels vertically and/or horizontally.
- the long edges are installed by angling.
- the panel is than displaced in locked position along the long side.
- the short edges are locked by horizontal snapping.
- the vertical connection is generally a tongue and a groove. During the horizontal displacement, a strip with a locking element is bent and when the edges are in contact, the strip springs back and a locking element enters a locking groove and locks the panels
- Similar locking systems may also be produced with a rigid strip and they are connected with an angling-angling method where both short and long edges are angled into a locked position.
- FIG. 1 A flexible tongue 30 is during locking displaced in a horizontally extending displacement groove 40 and into a tongue groove 20 of an adjacent panel.
- the displaceable tongue locks the edges vertically and a strip 6 with a locking element that cooperates with a locking groove 14 locks the panels horizontally.
- the locking is a combination of vertical displacement and turning similar to a scissor action.
- the tongue is gradually displaced inwardly during locking from one inner edge to an outer edge as shown in figure Id such that the tongue is bent in the length direction.
- Such systems are referred to as vertical snap systems and they provide an automatically locking during the folding action .
- High locking force can only be accomplished with high snapping resistance when the tongue is pressed inwardly and bent in the length direction. This creates separation forces that tend to push the panels apart during folding. The locking may lose its strength if the flexibility and pressing force of the tongue decreases over time.
- the flexibility must be considerable and allow that a flexible tongue is displaced in two directions about 1-2 mm.
- the material, which is used to produce such tongues, is rather expensive and glass fibres are generally used to reinforce the flexible tongue. It would be a major advantage if snapping could be eliminated in a system that locks automatically during folding .
- An overall objective of embodiment of the present invention is to provide a locking system for primarily rectangular floor panels with long and short edges installed in parallel rows, which allows that the short edges may be locked to each other automatically without a snap action that creates a locking resistance and
- a specific objective is to provide a locking system with a separate displaceable tongue that may be bent in length direction with a lower separation force and that
- An aspect of the invention is building panels provided with a locking system for vertical locking of a first and a second building panel by a vertical displacement of the panels relative each other.
- a displaceable tongue is attached into a sidewardly open displacement groove provided at an edge of the first panel.
- Said tongue cooperates with a tongue groove provided at an adjacent edge of the second panel for locking the edges
- the displaceable tongue comprises a pulling extension at its outer part
- displaceable tongue is pulled out from the displacement groove and into the tongue groove when the edges of the panels are displaced vertically against each other.
- Said pulling protrusion may be part of the tongue groove.
- the pulling extension may be inclined in relation to a main horizontal plane of the panels.
- the pulling protrusion may be inclined in relation to a main horizontal plane of the panels.
- the displaceable tongue may be provided with a locking hook that prevents the tongue to slide back into the displacement groove after locking.
- the locking hook may lock against an outer part of the displacement groove.
- Figs la-d illustrate locking systems according to known technology .
- Figs 2a-e illustrate a short edge locking system
- Figs 3a-3c illustrate a short edge locking system
- Figs 4a-c illustrate preferred embodiments of short
- FIGs 5a-e illustrate a locking system according to an embodiment of the invention with a locking hook that prevents unlocking.
- Figs 6a-d illustrate a tongue according to an
- Figs 7a-d illustrate a method according to an
- Figs 8a-c illustrate an embodiment of the invention.
- Figures 2a-2e show a first preferred embodiment of a short edge locking system provided with a flexible and displaceable tongue 30 in an edge of a first panel 1 inserted in a horizontally extending displacement groove 40.
- the displaceable tongue 30 has a pulling extension 31 comprising a tongue pulling surface 32 and tongue locking surface 33.
- the second adjacent panel 1' has a pulling protrusion 21 with a groove pulling surface 22 that is also a part of a tongue groove 20 comprising a groove locking surface 23.
- the pulling surfaces 22, 32 cooperate during the vertical displacement and pull the
- the pulling extension 31 comprises a tongue locking surface 33 that locks against a groove locking surface 23 and prevents vertical displacement of the edges in a first vertical direction.
- a locking strip 6 and a lower part 39 of the adjacent panel locks the edges in a second vertical direction.
- a locking element 8 and a locking groove 14 locks the edges horizontally together with the upper edges.
- the vertical connection may be used without the horizontal locking as shown by figure 2e.
- Short edges may be locked horizontally by for example friction between long edges.
- the tongue may be attached into a displacement groove 40 formed on the panel comprising the strip 6, the strip panel, or on the panel comprising the locking groove, the groove panel, as shown in figures 3a-3c.
- the pulling protrusion 21 may extend upwardly or downwardly and the displacement groove may be inclined against the
- Figures 4a-4c show that the strip 6 may be formed as a separate material.
- the pulling protrusion 21 may be flexible and this may eliminate production tolerances and facilitate the displacement of the tongue 30 into the tongue groove 20 during folding.
- Figures 5a-5e show that the displaceable tongue 30 may comprise a locking hook 34 that may serve as a friction connection to prevent the tongue 30 from falling out from the groove 40 but also to prevent the tongue from sliding back after locking.
- the locking angle Al is preferably about 45 degrees or higher. A higher angle facilitates displacement into the tongue groove 20 but also backward displacement. This may be prevented by a hook connection 34 that preferably locks against an upper or lower part of the displacement groove 40.
- the hook connection is pressed into the groove by a hammer that inserts the tongue 30 into the groove 40 during production.
- the hook 34 slides against a bevel formed at the displacement groove 40 as shown in figure 5c.
- the upper part of the locking element 8 is preferably located vertically below the tongue locking surface 33 as shown in figure 5d. This gives a stronger locking.
- the locking system may have a geometry that allows locking and unlocking with angling.
- Figures 6a-6c show that the displaceable tongue 30 turns and bends in the length direction during folding when an inner short edge of the tongue, as shown in figure 6b is in locked position and an outer short edge of the tongue 30 is in unlocked position as shown in figure 6d.
- the locking function may be improved if cavities 35 are formed on the displaceable tongue 30. Locking may also be improved if the locking surface 32 at an edge has a lower angle than at an inner part as shown in figures 6b and 6c.
- the cavities 35 may be formed at tongue section where the locking hooks 34 are formed.
- the displaceable tongue 30 comprises preferably a polymer material and is preferably formed by injection moulding.
- Figures 7a-7d show that the locking hook 34 may comprise a hook part 34a that is used to press the hook connection upwards by inserting rails 36 during the insertion of the tongue 30 into the displacement groove 40.
- Figures 8a-8c show that the locking hook 34 may be used to prevent unlocking in any locking system where a tongue is displace in a groove from an inner position to an outer position.
- the shown locking system comprises pushing protrusions 38 located in pushing cavities 37. The pushing protrusions slide against the locking element 8 and push the tongue 30 into a tongue groove 20.
- the locking element 8 is preferably located vertically below the cooperating locking surfaces 23,33 of the tongue 30 and the tongue groove 20.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Floor Finish (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17198982.5A EP3299539B1 (en) | 2011-08-15 | 2012-08-14 | Building panels provided with a mechanical locking system |
EP19206640.5A EP3623544B1 (en) | 2011-08-15 | 2012-08-14 | Mechanical locking system for floor panels |
PL17198982T PL3299539T3 (en) | 2011-08-15 | 2012-08-14 | Building panels provided with a mechanical locking system |
PL12824331T PL2744952T3 (en) | 2011-08-15 | 2012-08-14 | Mechanical locking system for floor panels |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161523584P | 2011-08-15 | 2011-08-15 | |
SE1150741 | 2011-08-15 | ||
PCT/SE2012/050872 WO2013025164A1 (en) | 2011-08-15 | 2012-08-14 | Mechanical locking system for floor panels |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19206640.5A Division EP3623544B1 (en) | 2011-08-15 | 2012-08-14 | Mechanical locking system for floor panels |
EP17198982.5A Division EP3299539B1 (en) | 2011-08-15 | 2012-08-14 | Building panels provided with a mechanical locking system |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2744952A1 true EP2744952A1 (en) | 2014-06-25 |
EP2744952A4 EP2744952A4 (en) | 2016-05-18 |
EP2744952B1 EP2744952B1 (en) | 2017-11-08 |
Family
ID=47715312
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19206640.5A Active EP3623544B1 (en) | 2011-08-15 | 2012-08-14 | Mechanical locking system for floor panels |
EP12824331.8A Active EP2744952B1 (en) | 2011-08-15 | 2012-08-14 | Mechanical locking system for floor panels |
EP17198982.5A Active EP3299539B1 (en) | 2011-08-15 | 2012-08-14 | Building panels provided with a mechanical locking system |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19206640.5A Active EP3623544B1 (en) | 2011-08-15 | 2012-08-14 | Mechanical locking system for floor panels |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17198982.5A Active EP3299539B1 (en) | 2011-08-15 | 2012-08-14 | Building panels provided with a mechanical locking system |
Country Status (12)
Country | Link |
---|---|
EP (3) | EP3623544B1 (en) |
JP (1) | JP6184953B2 (en) |
KR (1) | KR102058467B1 (en) |
CN (1) | CN103732841B (en) |
AU (1) | AU2012295598B2 (en) |
BR (1) | BR112014002946A8 (en) |
CA (1) | CA2844393C (en) |
MY (1) | MY165233A (en) |
PL (2) | PL2744952T3 (en) |
RU (1) | RU2597900C2 (en) |
UA (1) | UA110987C2 (en) |
WO (1) | WO2013025164A1 (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112012018285B1 (en) | 2010-02-04 | 2020-02-18 | Välinge Innovation AB | SET OF FLOOR PANELS |
UA114715C2 (en) | 2011-07-05 | 2017-07-25 | Сералок Інновейшн Аб | Mechanical locking of floor panels with a glued tongue |
US9725912B2 (en) | 2011-07-11 | 2017-08-08 | Ceraloc Innovation Ab | Mechanical locking system for floor panels |
US8650826B2 (en) | 2011-07-19 | 2014-02-18 | Valinge Flooring Technology Ab | Mechanical locking system for floor panels |
US8857126B2 (en) | 2011-08-15 | 2014-10-14 | Valinge Flooring Technology Ab | Mechanical locking system for floor panels |
EA028287B1 (en) | 2012-11-22 | 2017-10-31 | Сералок Инновейшн Аб | Mechanical locking system for floor panels |
MX367290B (en) | 2013-06-27 | 2019-08-13 | Vaelinge Innovation Ab | Building panel with a mechanical locking system. |
DE102013225358A1 (en) * | 2013-12-10 | 2015-06-11 | Laminatepark Gmbh & Co. Kg | Panel with locking element |
DE102014103176A1 (en) * | 2014-03-10 | 2015-09-10 | Guido Schulte | Surface made of mechanically interconnectable panels |
US10246883B2 (en) | 2014-05-14 | 2019-04-02 | Valinge Innovation Ab | Building panel with a mechanical locking system |
KR102386246B1 (en) | 2014-05-14 | 2022-04-12 | 뵈린게 이노베이션 에이비이 | Building panel with a mechanical locking system |
BE1021943B1 (en) * | 2014-05-28 | 2016-01-27 | Flooring Industries Limited, Sarl | FLOOR PANEL, FLOOR COVERING CREATED FROM SUCH FLOOR PANELS, METHOD FOR MANUFACTURING SUCH FLOOR PANELS AND LOCKING ELEMENT USED THEREIN. |
BR112017010662B1 (en) | 2014-11-27 | 2022-05-10 | Vãlinge Innovation Ab | Floor panel set with mechanical locking system |
DE102016114226A1 (en) | 2016-01-22 | 2017-07-27 | Hamberger Industriewerke Gmbh | Connection for elastic or solid components |
DE102016114221A1 (en) | 2016-01-22 | 2017-07-27 | Hamberger Industriewerke Gmbh | Connection for components |
EP3478903B1 (en) | 2016-06-29 | 2021-09-01 | Välinge Innovation AB | A method and device for managing and separating a tongue from a tongue blank |
MY192175A (en) | 2016-06-29 | 2022-08-04 | Valinge Innovation Ab | Method and device for inserting a tongue |
MY193272A (en) | 2016-06-29 | 2022-09-29 | Valinge Innovation Ab | Method and device for inserting a tongue |
CN109311179B (en) | 2016-06-30 | 2021-09-17 | 瓦林格创新股份有限公司 | Device for inserting a tongue |
MY195040A (en) | 2016-12-22 | 2023-01-04 | Valinge Innovation Ab | Device for Inserting a Tongue into an Insertion Groove in a Panel |
CN106948501A (en) * | 2017-04-27 | 2017-07-14 | 苏州天地彩钢制造有限公司 | A kind of socket type safety color steel |
BR112020025052A2 (en) * | 2018-06-13 | 2021-03-23 | Ceraloc Innovation Ab | floor system supplied with a connection system and an associated connection device |
CN108868051A (en) * | 2018-07-10 | 2018-11-23 | 浙江永吉木业有限公司 | A kind of low noise latch floor |
WO2020159355A1 (en) * | 2019-01-30 | 2020-08-06 | Floor Locking Technology B.V. | Panel and covering comprising the same |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10138285A1 (en) * | 2001-08-10 | 2003-03-06 | Akzenta Paneele & Profile Gmbh | Panel and fastening system for panels |
ES2609056T3 (en) * | 2002-04-03 | 2017-04-18 | Välinge Innovation AB | Method of fixing a strip to a floating floor plate |
CN2546555Y (en) * | 2002-05-28 | 2003-04-23 | 王明珍 | Automatic locking movable flooring |
CN1598216A (en) * | 2004-08-31 | 2005-03-23 | 张彩奎 | Floor board imserted with magnetic and its mfg. method |
PT1936068E (en) * | 2004-10-22 | 2012-03-06 | Vaelinge Innovation Ab | A method of providing floor panels with a mechanical locking system |
SE529076C2 (en) * | 2005-07-11 | 2007-04-24 | Pergo Europ Ab | A joint for panels |
SE531111C2 (en) * | 2006-12-08 | 2008-12-23 | Vaelinge Innovation Ab | Mechanical locking of floor panels |
DE102007032885B4 (en) * | 2007-07-14 | 2016-01-14 | Flooring Technologies Ltd. | Panel, in particular floor panel and means for locking interconnected panels |
US7726088B2 (en) * | 2007-07-20 | 2010-06-01 | Moritz Andre Muehlebach | Flooring system |
DE102007042250B4 (en) * | 2007-09-06 | 2010-04-22 | Flooring Technologies Ltd. | Device for connecting and locking two building panels, in particular floor panels |
CN102943555B (en) * | 2008-01-31 | 2014-12-31 | 瓦林格创新股份有限公司 | Mechanical locking of floor panels, methods to install and uninstall panels, equipment, and product |
US8112967B2 (en) * | 2008-05-15 | 2012-02-14 | Valinge Innovation Ab | Mechanical locking of floor panels |
CH700513A2 (en) * | 2009-03-10 | 2010-09-15 | Innovaris Ag | Panels. |
EP2524093B1 (en) * | 2010-01-12 | 2020-02-05 | Välinge Innovation AB | Mechanical locking system for floor panels |
DE102012105793A1 (en) * | 2011-07-29 | 2013-01-31 | Hamberger Industriewerke Gmbh | Connection for elastic or plate-shaped components and floor covering |
-
2012
- 2012-08-14 UA UAA201402085A patent/UA110987C2/en unknown
- 2012-08-14 BR BR112014002946A patent/BR112014002946A8/en active Search and Examination
- 2012-08-14 AU AU2012295598A patent/AU2012295598B2/en not_active Ceased
- 2012-08-14 CA CA2844393A patent/CA2844393C/en active Active
- 2012-08-14 KR KR1020147005590A patent/KR102058467B1/en active IP Right Grant
- 2012-08-14 WO PCT/SE2012/050872 patent/WO2013025164A1/en active Application Filing
- 2012-08-14 EP EP19206640.5A patent/EP3623544B1/en active Active
- 2012-08-14 CN CN201280038811.XA patent/CN103732841B/en active Active
- 2012-08-14 EP EP12824331.8A patent/EP2744952B1/en active Active
- 2012-08-14 EP EP17198982.5A patent/EP3299539B1/en active Active
- 2012-08-14 MY MYPI2013004578A patent/MY165233A/en unknown
- 2012-08-14 PL PL12824331T patent/PL2744952T3/en unknown
- 2012-08-14 RU RU2014107916/03A patent/RU2597900C2/en active
- 2012-08-14 JP JP2014525967A patent/JP6184953B2/en active Active
- 2012-08-14 PL PL17198982T patent/PL3299539T3/en unknown
Also Published As
Publication number | Publication date |
---|---|
RU2597900C2 (en) | 2016-09-20 |
EP3299539A1 (en) | 2018-03-28 |
JP2014526004A (en) | 2014-10-02 |
RU2014107916A (en) | 2015-09-27 |
MY165233A (en) | 2018-03-14 |
UA110987C2 (en) | 2016-03-10 |
KR20140053262A (en) | 2014-05-07 |
CN103732841A (en) | 2014-04-16 |
WO2013025164A1 (en) | 2013-02-21 |
AU2012295598B2 (en) | 2017-06-15 |
CA2844393A1 (en) | 2013-02-21 |
JP6184953B2 (en) | 2017-08-23 |
EP3623544A1 (en) | 2020-03-18 |
KR102058467B1 (en) | 2019-12-23 |
EP3299539B1 (en) | 2019-11-06 |
CA2844393C (en) | 2019-09-03 |
AU2012295598A1 (en) | 2014-01-23 |
EP2744952A4 (en) | 2016-05-18 |
BR112014002946A2 (en) | 2017-03-01 |
CN103732841B (en) | 2016-09-21 |
EP3623544B1 (en) | 2022-10-05 |
BR112014002946A8 (en) | 2018-04-03 |
EP2744952B1 (en) | 2017-11-08 |
PL3299539T3 (en) | 2020-03-31 |
PL2744952T3 (en) | 2018-04-30 |
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