CH55450A - Electric alarm device on clocks - Google Patents
Electric alarm device on clocksInfo
- Publication number
- CH55450A CH55450A CH55450A CH55450DA CH55450A CH 55450 A CH55450 A CH 55450A CH 55450 A CH55450 A CH 55450A CH 55450D A CH55450D A CH 55450DA CH 55450 A CH55450 A CH 55450A
- Authority
- CH
- Switzerland
- Prior art keywords
- clocks
- alarm device
- electric alarm
- electric
- alarm
- Prior art date
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
- G04C21/30—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school
- G04C21/305—Producing acoustic time signals by electrical means producing the signals at adjustable fixed times with provision for a number of operations at different times, e.g. ringing the bells in a school by the hand(s) or handlike members closing the contacts
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH55450T | 1911-03-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH55450A true CH55450A (en) | 1912-08-16 |
Family
ID=4295372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH55450A CH55450A (en) | 1911-03-24 | 1911-03-24 | Electric alarm device on clocks |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH55450A (en) |
-
1911
- 1911-03-24 CH CH55450A patent/CH55450A/en unknown
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