FR55308E - - Google Patents
Info
- Publication number
- FR55308E FR55308E FR55308DA FR55308E FR 55308 E FR55308 E FR 55308E FR 55308D A FR55308D A FR 55308DA FR 55308 E FR55308 E FR 55308E
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR55308E true FR55308E (ja) | 1952-01-04 |
Family
ID=1363464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR55308D Expired FR55308E (ja) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR55308E (ja) |
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0
- FR FR55308D patent/FR55308E/fr not_active Expired