CH54234A - Elektrische Alarmeinrichtung - Google Patents
Elektrische AlarmeinrichtungInfo
- Publication number
- CH54234A CH54234A CH54234A CH54234DA CH54234A CH 54234 A CH54234 A CH 54234A CH 54234 A CH54234 A CH 54234A CH 54234D A CH54234D A CH 54234DA CH 54234 A CH54234 A CH 54234A
- 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
- G04C21/305—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 |
|---|---|---|---|
| CH54234T | 1911-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH54234A true CH54234A (de) | 1912-05-17 |
Family
ID=4293323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH54234A CH54234A (de) | 1911-07-31 | 1911-07-31 | Elektrische Alarmeinrichtung |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH54234A (de) |
-
1911
- 1911-07-31 CH CH54234A patent/CH54234A/de unknown
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