FR645871A - - Google Patents
Info
- Publication number
- FR645871A FR645871A FR645871DA FR645871A FR 645871 A FR645871 A FR 645871A FR 645871D A FR645871D A FR 645871DA FR 645871 A FR645871 A FR 645871A
- Authority
- FR
- France
- 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
-
- 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
- G04B19/253—Driving or releasing mechanisms
- G04B19/25333—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement
- G04B19/25353—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement
- G04B19/25366—Driving or releasing mechanisms wherein the date indicators are driven or released mechanically by a clockwork movement driven or released stepwise by the clockwork movement manually corrected at the end of months having less than 31 days
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR645871A true FR645871A (zh) | 1928-11-03 |
Family
ID=1542798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR645871D Expired FR645871A (zh) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR645871A (zh) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2671307A (en) * | 1950-08-15 | 1954-03-09 | Imhof Arthur | Calendar indicator mechanism |
| US2741082A (en) * | 1950-12-12 | 1956-04-10 | Elberg Boris | Calendar timepiece |
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0
- FR FR645871D patent/FR645871A/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2671307A (en) * | 1950-08-15 | 1954-03-09 | Imhof Arthur | Calendar indicator mechanism |
| US2741082A (en) * | 1950-12-12 | 1956-04-10 | Elberg Boris | Calendar timepiece |