CH69412A - Electric alarm device - Google Patents
Electric alarm deviceInfo
- Publication number
- CH69412A CH69412A CH69412A CH69412DA CH69412A CH 69412 A CH69412 A CH 69412A CH 69412 A CH69412 A CH 69412A CH 69412D A CH69412D A CH 69412DA CH 69412 A CH69412 A CH 69412A
- 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 |
---|---|---|---|
CH69412T | 1914-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH69412A true CH69412A (en) | 1915-06-16 |
Family
ID=4317443
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH69412A CH69412A (en) | 1914-11-20 | 1914-11-20 | Electric alarm device |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH69412A (en) |
-
1914
- 1914-11-20 CH CH69412A patent/CH69412A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH69412A (en) | Electric alarm device | |
CH68240A (en) | Electrical contact device | |
CH75289A (en) | Electric alarm device | |
CH53859A (en) | Electric alarm device | |
CH54234A (en) | Electric alarm device | |
CH69301A (en) | Electric cooking device | |
CH68890A (en) | Electric timer | |
CH70704A (en) | Electric remote control device | |
CH70410A (en) | Electric cooking device | |
CH72712A (en) | Electric cooking device | |
CH67216A (en) | Electric cooking device | |
CH72133A (en) | Electric cooking device | |
CH66411A (en) | Electric burglar alarm | |
CH55450A (en) | Electric alarm device on clocks | |
CH63912A (en) | Automatic electric light and alarm device | |
CH72567A (en) | Electrical safety device | |
CH62472A (en) | Electric alarm devices on clocks | |
CH74459A (en) | Electric welding device | |
CH68066A (en) | Alarm device | |
CH55124A (en) | Electric alarm and alarm device | |
CH64791A (en) | Electric lighting device | |
CH69902A (en) | Contact device for electric radiators | |
FR510633A (en) | Wired electrical conductor | |
CH64330A (en) | Electrical switching device | |
FR479887A (en) | Electric security alarm |