CH291958A - Alarm device. - Google Patents
Alarm device.Info
- Publication number
- CH291958A CH291958A CH291958DA CH291958A CH 291958 A CH291958 A CH 291958A CH 291958D A CH291958D A CH 291958DA CH 291958 A CH291958 A CH 291958A
- Authority
- CH
- Switzerland
- Prior art keywords
- alarm device
- alarm
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/012—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using recorded signals, e.g. speech
Landscapes
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT291958X | 1949-04-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH291958A true CH291958A (en) | 1953-07-15 |
Family
ID=11226533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH291958D CH291958A (en) | 1949-04-02 | 1950-03-31 | Alarm device. |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE494881A (en) |
CH (1) | CH291958A (en) |
DE (1) | DE830466C (en) |
FR (1) | FR1031567A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE962587C (en) * | 1952-11-15 | 1957-04-25 | Wilhelm Kengelbach | Fire, accident and safety alarm system |
US4234874A (en) * | 1978-11-08 | 1980-11-18 | Inventional/Security Development Corp. | Alarm system and method thereof |
-
0
- BE BE494881D patent/BE494881A/xx unknown
-
1950
- 1950-03-30 DE DEM2592A patent/DE830466C/en not_active Expired
- 1950-03-30 FR FR1031567D patent/FR1031567A/en not_active Expired
- 1950-03-31 CH CH291958D patent/CH291958A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BE494881A (en) | |
FR1031567A (en) | 1953-06-24 |
DE830466C (en) | 1952-02-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH295638A (en) | Hanging device. | |
CH295129A (en) | Addition device. | |
CH294969A (en) | Anchoring device. | |
CH287031A (en) | Injection device. | |
CH287731A (en) | Telemetry device. | |
CH272956A (en) | Recording device. | |
FR1019686A (en) | Excitation device | |
FR1007350A (en) | Improved closure device | |
CH293575A (en) | Generator device. | |
FR60237E (en) | Sprayer device | |
FR994694A (en) | Locking device for nuts | |
CH294518A (en) | Storage device. | |
CH291958A (en) | Alarm device. | |
CH298003A (en) | Antenna device. | |
CH278368A (en) | Silent snap-in device. | |
CH292174A (en) | Flexible coupling device. | |
FR1022547A (en) | Alarm device | |
FR988242A (en) | Respirator device | |
FR1018090A (en) | Variable impedance device | |
FR990823A (en) | Improved closure device | |
FR980559A (en) | Electro-automatic alarm device | |
FR1024481A (en) | Locking device | |
FR996842A (en) | Clutch device | |
FR1024767A (en) | Coupling device | |
FR59905E (en) | Coupling device |