EP3896534B1 - Partly transparent timepiece hand and method for manufacturing same - Google Patents
Partly transparent timepiece hand and method for manufacturing same Download PDFInfo
- Publication number
- EP3896534B1 EP3896534B1 EP20170046.5A EP20170046A EP3896534B1 EP 3896534 B1 EP3896534 B1 EP 3896534B1 EP 20170046 A EP20170046 A EP 20170046A EP 3896534 B1 EP3896534 B1 EP 3896534B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- head
- hand
- titanium
- timepiece
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 11
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- 239000012780 transparent material Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 239000004922 lacquer Substances 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 239000002966 varnish Substances 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 3
- 229910052594 sapphire Inorganic materials 0.000 claims description 3
- 239000010980 sapphire Substances 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 238000005219 brazing Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 238000010329 laser etching Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 1
- -1 titanium-tungsten Chemical compound 0.000 description 1
Images
Classifications
-
- 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
- G04B19/04—Hands; Discs with a single mark or the like
- G04B19/042—Construction and manufacture of the hands; arrangements for increasing reading accuracy
Definitions
- the present invention relates to a partly transparent clockwork hand and its method of manufacture.
- a clockwork hand comprises a center or head serving for its attachment to a shaft, generally by means of a barrel, and a body extending radially from the head and possibly ending in a point.
- Clock hands are generally opaque in order to be clearly visible and fulfill their display function in collaboration with a scale on the dial. However, there are hands which are transparent except on one end part of their body so as not to interfere with the reading of information contained in other areas of the dial.
- the patent application EN 2867285 and utility model DE 29604580 U1 propose needles made of transparent material of which only one end part, constituting the indicator part, is colored.
- the patent DE 822293 describes needles comprising a body made of transparent material and an attached metal tip, the head possibly being made of a transparent material or of added metal.
- the present invention aims to provide a partly transparent clock hand whose manufacturing quality and aesthetics can be excellent without it being necessary to multiply the finishing operations.
- a hand 1 for a timepiece such as a wristwatch or a pocket watch, which can be an hour, minute, date indicator hand, a chronograph hand, etc
- Needle 1 includes a needle structure and coatings formed on the needle structure.
- the needle structure is made entirely of a transparent material, in a single piece, and comprises a circular head 2 and a body 3 extending radially from the periphery of the head 2.
- the transparent material is typically mineral glass, glass organic or sapphire, preferably hardened mineral glass.
- the head 2 has an axis hole 4 capable of receiving a barrel 5 intended to be driven on a needle axis.
- Barrel 5 is typically metallic.
- the body 3 comprises a rod 6 and a distal end part 7 of generally rectangular shape transverse to the rod 6.
- the body 3 could nevertheless be in the form of a rod from one end to the other, the rod being able to may or may not be tapered and may or may not end in a point.
- top surface is meant the surface which is visible through the crystal when the hand 1 is mounted in the timepiece.
- the material of the first layer 8 is preferably titanium, titanium oxide or a titanium alloy such as titanium-tungsten, more preferably titanium.
- the thickness of this layer 8 is advantageously at least 50 nm and preferably at least 70 nm.
- the first layer 8 is covered with a colored layer 9 formed of a paint, a lacquer or a varnish having its own color.
- the distal end part 7 constitutes the indicator part of the needle 1 intended to display information in collaboration with a graduation of a dial.
- the color of layer 9 is preferably a bright color making it easier to read the information.
- the first layer 8 has two distinct functions.
- a first function consists in making the head 2 opaque or almost opaque in order to hide unsightly elements located below it.
- the unsightly elements to be concealed are, for example, glue or solder applied between a shoulder 10 of the barrel and the lower surface 11 of the head 2 to fix the needle 1 to the barrel 5, and/or fixing elements of other needles mounted below the needle 1.
- a second function of the first layer 8 is to serve as a bonding layer improving the adhesion of the color layer 9 to the needle structure. Titanium is the preferred material for the first layer 8 because it withstands long exposure to ambient air without losing its effectiveness. This option gives in particular the possibility of delaying for several days, if necessary, the application of paint, lacquer or varnish.
- the needle structure 2, 3 is first made by etching, by 3D printing, by laser exposure and chemical etching (Selective Laser Etching) or by any other appropriate technique. Then, the first layer 8 is deposited simultaneously on the upper surface of the distal end part 7 and on the upper surface of the head 2, typically by PVD (physical vapor deposition) or CVD (chemical vapor deposition) . During this operation, the upper surface of the strip 6 is protected, for example by means of a mask, so as not to receive the layer 8, the mask then being removed or eliminated. Finally, the color layer 9 is applied to the part of the first layer 8 located on the distal end part 7. The step of applying the color layer 9 can be implemented using any technique that those skilled in the art will deem appropriate, for example spraying, dipping, brushing, etc.
- the needle 1 thus manufactured can be glued or brazed by the lower surface 11 of the head 2 on the shoulder 10 of the barrel 5.
- a brazing of the type described in the patent application EP 3309624 employing a multilayer metallic coating on the bottom surface 11 of the head 2 can be implemented.
- a metal layer is deposited between the first layer 8 and the color layer 9 and possibly also on the part of the first layer 8 located on the head 2.
- the metal of this metal layer can be chosen among noble metals or platinoids, as well as their alloys. These include gold, ruthenium, rhodium, palladium, osmium, iridium and platinum.
- the metal of this metallic layer is advantageously gold.
- This intermediate metal layer between the first layer 8 and the color layer 9 can have an interesting aesthetic effect on the color layer 9, such as improving the luster or the hue.
- a layer of gold deposited by PVD or CVD on a first titanium layer 8 will allow the color layer 9 to have more shine.
- the color layer 9 may only partially cover the first layer 8 on the distal end part 7. Such an embodiment makes it possible to play with the covering surfaces of the first layer 8, of a possible metal layer intermediate layer and the color layer 9 in order to reveal different strata of colors and thus create shapes and/or borders.
- the needle according to the invention lends itself particularly to quality manufacture with a minimum of operations, a single step being necessary to hide the glue or solder under the head 2 and improve the adhesion of the color layer 9.
Description
La présente invention concerne une aiguille d'horlogerie en partie transparente et son procédé de fabrication.The present invention relates to a partly transparent clockwork hand and its method of manufacture.
Une aiguille d'horlogerie comprend un centre ou tête servant à sa fixation sur un arbre, en général par l'intermédiaire d'un canon, et un corps s'étendant radialement depuis la tête et pouvant se terminer en pointe.A clockwork hand comprises a center or head serving for its attachment to a shaft, generally by means of a barrel, and a body extending radially from the head and possibly ending in a point.
Les aiguilles d'horlogerie sont généralement opaques pour être bien visibles et remplir leur fonction d'affichage en collaboration avec une graduation du cadran. Il existe cependant des aiguilles qui sont transparentes sauf sur une partie d'extrémité de leur corps afin de ne pas gêner la lecture d'informations contenues dans d'autres zones du cadran. La demande de brevet
Dans le domaine horloger, surtout haut de gamme, l'esthétique revêt une importance particulière. Les composants, notamment ceux qui sont visibles par l'utilisateur, doivent avoir un aspect soigné et attrayant. Avec une aiguille en partie seulement transparente et assemblée à un canon ou à un arbre qui, lui, est opaque, des défauts peuvent facilement apparaître et gâcher l'esthétique. Le risque est alors grand de devoir effectuer de nombreuses étapes de finition.In the watchmaking field, especially high-end, aesthetics is of particular importance. Components, especially those that are visible to the user, should look neat and attractive. With a needle that is only partly transparent and assembled to a barrel or a shaft which is opaque, defects can easily appear and spoil the aesthetics. There is then a great risk of having to carry out numerous finishing steps.
La présente invention vise à proposer une aiguille d'horlogerie en partie transparente dont la qualité de fabrication et l'esthétique puissent être excellentes sans qu'il soit nécessaire de multiplier les opérations de finition.The present invention aims to provide a partly transparent clock hand whose manufacturing quality and aesthetics can be excellent without it being necessary to multiply the finishing operations.
A cette fin il est proposé une aiguille d'horlogerie selon la revendication 1 et un procédé de fabrication d'une aiguille d'horlogerie selon la revendication 7, des modes de réalisation particuliers étant définis dans les revendications dépendantes.To this end there is proposed a clockwork hand according to
D'autres caractéristiques et avantages de la présente invention apparaîtront à la lecture de la description détaillée suivante faite en référence aux dessins annexés dans lesquels :
- la
figure 1 est une vue en perspective d'une aiguille d'horlogerie selon l'invention ; - la
figure 2 est une vue de profil schématique de l'aiguille d'horlogerie selon l'invention assemblée à son canon ; - la
figure 3 est une vue agrandie schématique de la tête de l'aiguille selon l'invention et du canon.
- the
figure 1 is a perspective view of a clockwork hand according to the invention; - the
figure 2 is a schematic side view of the clockwork hand according to the invention assembled to its barrel; - the
picture 3
Aux
La structure d'aiguille est faite entièrement dans une matière transparente, de manière monobloc, et comprend une tête 2 circulaire et un corps 3 s'étendant radialement depuis la périphérie de la tête 2. La matière transparente est typiquement du verre minéral, du verre organique ou du saphir, de préférence du verre minéral trempé.The needle structure is made entirely of a transparent material, in a single piece, and comprises a
La tête 2 présente un trou d'axe 4 apte à accueillir un canon 5 destiné à être chassé sur un axe d'aiguille. Le canon 5 est typiquement métallique.The
Le corps 3 comprend une baguette 6 et une partie d'extrémité distale 7 de forme générale rectangulaire transversale à la baguette 6. Le corps 3 pourrait néanmoins être sous la forme d'une baguette d'un bout à l'autre, la baguette pouvant ou non être effilée et pouvant ou non être terminée par une pointe.The
Une première couche 8, d'un matériau choisi parmi le titane, le chrome, le tantale, leurs alliages, leurs oxydes et leurs nitrures, est formée sur la surface supérieure de la tête 2 et sur la surface supérieure de la partie d'extrémité distale 7. Par « surface supérieure » on entend la surface qui est visible à travers la glace lorsque l'aiguille 1 est montée dans la pièce d'horlogerie. Le matériau de la première couche 8 est de préférence le titane, l'oxyde de titane ou un alliage de titane tel que le titane-tungstène, de préférence encore le titane. L'épaisseur de cette couche 8 est avantageusement d'au moins 50 nm et de préférence d'au moins 70 nm.A
Sur la partie d'extrémité distale 7 uniquement, la première couche 8 est recouverte d'une couche de couleur 9 formée d'une peinture, d'une laque ou d'un vernis possédant une couleur propre. La partie d'extrémité distale 7 constitue la partie indicatrice de l'aiguille 1 destinée à afficher une information en collaboration avec une graduation d'un cadran. La couleur de la couche 9 est de préférence une couleur vive facilitant la lecture de l'information.On the
La première couche 8 présente deux fonctions distinctes. Une première fonction consiste à rendre opaque ou quasiment opaque la tête 2 pour cacher des éléments inesthétiques se trouvant au-dessous de celle-ci. Les éléments inesthétiques à dissimuler sont par exemple de la colle ou de la brasure appliquée entre un épaulement 10 du canon et la surface inférieure 11 de la tête 2 pour fixer l'aiguille 1 au canon 5, et/ou des éléments de fixation d'autres aiguilles montées au-dessous de l'aiguille 1. Une deuxième fonction de la première couche 8 est de servir de couche d'accrochage améliorant l'adhérence de la couche de couleur 9 sur la structure d'aiguille. Le titane est le matériau préféré pour la première couche 8 car il supporte une longue exposition à l'air ambiant sans perdre son efficacité. Cette faculté donne notamment la possibilité de retarder de plusieurs jours, si nécessaire, l'application de la peinture, de la laque ou du vernis.The
La baguette 6, transparente, qui relie la partie d'extrémité distale 7 à la tête 2, laisse visibles à l'utilisateur les informations du cadran au-dessus desquelles elle tourne. Sa transparence peut être améliorée par un traitement antireflet.The
Pour fabriquer l'aiguille 1, on réalise d'abord la structure d'aiguille 2, 3 par gravure, par impression 3D, par exposition laser et gravure chimique (Selective Laser Etching) ou par toute autre technique appropriée. Ensuite, on dépose la première couche 8 simultanément sur la surface supérieure de la partie d'extrémité distale 7 et sur la surface supérieure de la tête 2, typiquement par PVD (dépôt physique en phase vapeur) ou CVD (dépôt chimique en phase vapeur). Pendant cette opération, la surface supérieure de la baguette 6 est protégée, par exemple au moyen d'un masque, pour ne pas recevoir la couche 8, le masque étant ensuite retiré ou éliminé. Enfin, on applique la couche de couleur 9 sur la partie de la première couche 8 située sur la partie d'extrémité distale 7. L'étape d'application de la couche de couleur 9 peut être mise en œuvre à l'aide de toute technique que l'homme du métier jugera adéquate, par exemple pulvérisation, trempe, pinceau, etc.To manufacture the
L'aiguille 1 ainsi fabriquée peut être collée ou brasée par la surface inférieure 11 de la tête 2 sur l'épaulement 10 du canon 5. Avantageusement, un brasage du type décrit dans la demande de brevet
Dans une variante de l'invention, une couche métallique est déposée entre la première couche 8 et la couche de couleur 9 et éventuellement aussi sur la partie de la première couche 8 située sur la tête 2. Le métal de cette couche métallique peut être choisi parmi les métaux nobles ou les platinoïdes, ainsi que leurs alliages. Il s'agit notamment de l'or, du ruthénium, du rhodium, du palladium, de l'osmium, de l'iridium et du platine. Le métal de cette couche métallique est avantageusement de l'or. Cette couche métallique intermédiaire entre la première couche 8 et la couche de couleur 9 peut avoir un effet esthétique intéressant sur la couche de couleur 9, tel qu'améliorer l'éclat ou la teinte. Ainsi une couche d'or déposée par PVD ou CVD sur une première couche 8 en titane permettra à la couche de couleur 9 d'avoir plus d'éclat.In a variant of the invention, a metal layer is deposited between the
La couche de couleur 9 peut ne couvrir que partiellement la première couche 8 sur la partie d'extrémité distale 7. Un tel mode de mise en oeuvre permet de jouer avec les surfaces de recouvrement de la première couche 8, d'une éventuelle couche métallique intermédiaire et de la couche de couleur 9 afin de laisser apparaître différentes strates de couleurs et de créer ainsi des formes et/ou des bordures.The
L'homme du métier appréciera que l'aiguille selon l'invention se prête particulièrement à une fabrication de qualité avec un minimum d'opérations, une seule étape étant nécessaire pour cacher la colle ou brasure sous la tête 2 et améliorer l'adhérence de la couche de couleur 9.Those skilled in the art will appreciate that the needle according to the invention lends itself particularly to quality manufacture with a minimum of operations, a single step being necessary to hide the glue or solder under the
Claims (13)
- Timepiece hand (1) comprising:- a hand structure made entirely of a transparent material and comprising a head (2) and a body (3),- a first layer (8) formed on the upper surface of the head (2) and on the upper surface of only a part (7) of the body (3), said part (7) being remote from the head (2), the material of the first layer (8) being selected from titanium, chromium, tantalum, alloys thereof and oxides and nitrides thereof,- a colour layer (9) comprising a paint, a lacquer or a varnish formed on the part of the first layer (8) located on the body (3).
- Timepiece hand (1) as claimed in claim 1, characterised in that the transparent material is mineral or organic glass or sapphire.
- Timepiece hand (1) as claimed in claim 1 or 2, characterised in that the material of the first layer (8) is titanium.
- Timepiece hand (1) as claimed in any one of claims 1 to 3, characterised in that the thickness of the first layer (8) is at least 50 nm, preferably at least 70 nm.
- Timepiece hand (1) as claimed in any one of claims 1 to 4, characterised in that said part (7) of the body (3) is a distal end part.
- Timepiece assembly comprising a timepiece hand (1) as claimed in any one of claims 1 to 5 and a barrel (5), the head (2) of the hand (1) being glued or brazed at its lower surface (11) to a shoulder (10) of the barrel (5).
- Method for manufacturing a partly transparent timepiece hand (1), comprising the following steps:a) manufacturing, from a transparent material, a hand structure comprising a head (2) and a body (3),b) forming a first layer (8) simultaneously on the upper surface of the head (2) and on the upper surface of only a part (7) of the body (3), said part (7) being remote from the head (2), the material of the first layer (8) being selected from titanium, chromium, tantalum, alloys thereof and oxides and nitrides thereof,c) forming a colour layer (9) comprising a paint, a lacquer or a varnish on the part of the first layer (8) located on the body (3).
- Method as claimed in claim 7, characterised in that the first layer (8) is formed by PVD or CVD.
- Method as claimed in claim 7 or 8, characterised in that the transparent material is mineral or organic glass or sapphire.
- Method as claimed in any one of claims 7 to 9, characterised in that the material of the first layer (8) is titanium.
- Method as claimed in any one of claims 7 to 10, characterised in that the thickness of the first layer (8) is at least 50 nm, preferably at least 70 nm.
- Method as claimed in any one of claims 7 to 11, characterised in that said part (7) of the body (3) is a distal end part.
- Method as claimed in any one of claims 7 to 12, characterised in that it further comprises a step of gluing or brazing the head (2), at its lower surface (11), to a shoulder (10) of a barrel (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20170046.5A EP3896534B1 (en) | 2020-04-17 | 2020-04-17 | Partly transparent timepiece hand and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20170046.5A EP3896534B1 (en) | 2020-04-17 | 2020-04-17 | Partly transparent timepiece hand and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3896534A1 EP3896534A1 (en) | 2021-10-20 |
| EP3896534B1 true EP3896534B1 (en) | 2022-11-09 |
Family
ID=70295003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20170046.5A Active EP3896534B1 (en) | 2020-04-17 | 2020-04-17 | Partly transparent timepiece hand and method for manufacturing same |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP3896534B1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE822293C (en) | 1949-07-16 | 1951-11-26 | Uhrenfabriken Gebrueder Jungha | Hands for timepiece u. like |
| JPS5333468U (en) * | 1976-08-30 | 1978-03-23 | ||
| DE29604580U1 (en) | 1996-03-12 | 1997-05-15 | Liauw Ek Tjien | 3-hand calendar clock with 3 rings at the end showing the date, month and day; the dial is divided into 3 circles for day, month, date |
| JP2004279382A (en) * | 2003-03-19 | 2004-10-07 | Citizen Watch Co Ltd | Decorative light pointer and its manufacturing method |
| FR2867285B1 (en) | 2004-03-03 | 2009-07-31 | Benoit Espiau | WATCH |
| CH713026A2 (en) | 2016-10-13 | 2018-04-13 | Patek Philippe Sa Geneve | Method of assembling watch components |
-
2020
- 2020-04-17 EP EP20170046.5A patent/EP3896534B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3896534A1 (en) | 2021-10-20 |
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