CH75289A - Electric alarm device - Google Patents
Electric alarm deviceInfo
- Publication number
- CH75289A CH75289A CH75289A CH75289DA CH75289A CH 75289 A CH75289 A CH 75289A CH 75289 A CH75289 A CH 75289A CH 75289D A CH75289D A CH 75289DA CH 75289 A CH75289 A CH 75289A
- Authority
- CH
- Switzerland
- Prior art keywords
- 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
- G04C21/32—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 giving indications at a number of places each at a different time, e.g. system of alarms in a hotel
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH75289T | 1916-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH75289A true CH75289A (en) | 1917-07-02 |
Family
ID=4326570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH75289A CH75289A (en) | 1916-12-26 | 1916-12-26 | Electric alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH75289A (en) |
-
1916
- 1916-12-26 CH CH75289A patent/CH75289A/en unknown
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