FR646045A - - Google Patents
Info
- Publication number
- FR646045A FR646045A FR646045DA FR646045A FR 646045 A FR646045 A FR 646045A FR 646045D A FR646045D A FR 646045DA FR 646045 A FR646045 A FR 646045A
- 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
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C21/00—Producing acoustic time signals by electrical means
- G04C21/16—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times
- G04C21/20—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm
- G04C21/22—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times by closing a contact to ring an electromechanical alarm put into action by the arbor of a mechanical alarm work
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR646045A true FR646045A (fr) | 1928-11-06 |
Family
ID=1542802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR646045D Expired FR646045A (fr) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR646045A (fr) |
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0
- FR FR646045D patent/FR646045A/fr not_active Expired