FR642875A - - Google Patents
Info
- Publication number
- FR642875A FR642875A FR642875DA FR642875A FR 642875 A FR642875 A FR 642875A FR 642875D A FR642875D A FR 642875DA FR 642875 A FR642875 A FR 642875A
- 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
- G04B21/00—Indicating the time by acoustic means
- G04B21/02—Regular striking mechanisms giving the full hour, half hour or quarter hour
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR642875A true FR642875A (it) | 1928-09-06 |
Family
ID=1542725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR642875D Expired FR642875A (it) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR642875A (it) |
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0
- FR FR642875D patent/FR642875A/fr not_active Expired