CH54234A - Electric alarm device - Google Patents
Electric alarm deviceInfo
- 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 (en) | 1912-05-17 |
Family
ID=4293323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH54234A CH54234A (en) | 1911-07-31 | 1911-07-31 | Electric alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH54234A (en) |
-
1911
- 1911-07-31 CH CH54234A patent/CH54234A/en unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH53859A (en) | Electric alarm device | |
| CH54234A (en) | Electric alarm device | |
| FR442668A (en) | Electrical switches | |
| CH75289A (en) | Electric alarm device | |
| CH55450A (en) | Electric alarm device on clocks | |
| CH69412A (en) | Electric alarm device | |
| CH55124A (en) | Electric alarm and alarm device | |
| CH68240A (en) | Electrical contact device | |
| CH57855A (en) | Electric fuse | |
| CH66411A (en) | Electric burglar alarm | |
| CH58328A (en) | Electric flashlight | |
| CH56703A (en) | Electric flashlight | |
| CH59327A (en) | Electric flashlight | |
| FR447888A (en) | Electric warning device | |
| CH55701A (en) | Electric heat generating device | |
| CH54763A (en) | Alarm device | |
| CH63912A (en) | Automatic electric light and alarm device | |
| CH51549A (en) | Electric alarm clock | |
| CH52040A (en) | Electric release device | |
| CH62472A (en) | Electric alarm devices on clocks | |
| CH74459A (en) | Electric welding device | |
| FR431881A (en) | Electrical signal | |
| CH61801A (en) | Electric bell | |
| CH67216A (en) | Electric cooking device | |
| CH72133A (en) | Electric cooking device |