BE494881A - - Google Patents
Info
- Publication number
- BE494881A BE494881A BE494881DA BE494881A BE 494881 A BE494881 A BE 494881A BE 494881D A BE494881D A BE 494881DA BE 494881 A BE494881 A BE 494881A
- Authority
- BE
- Belgium
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 |
|---|---|
| BE494881A true BE494881A (en:Method) |
Family
ID=11226533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494881D BE494881A (en:Method) | 1949-04-02 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE494881A (en:Method) |
| CH (1) | CH291958A (en:Method) |
| DE (1) | DE830466C (en:Method) |
| FR (1) | FR1031567A (en:Method) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE962587C (de) * | 1952-11-15 | 1957-04-25 | Wilhelm Kengelbach | Feuer-, Unfall- und Sicherheitsmeldeanlage |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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/de not_active Expired
- 1950-03-30 FR FR1031567D patent/FR1031567A/fr not_active Expired
- 1950-03-31 CH CH291958D patent/CH291958A/fr unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE962587C (de) * | 1952-11-15 | 1957-04-25 | Wilhelm Kengelbach | Feuer-, Unfall- und Sicherheitsmeldeanlage |
Also Published As
| Publication number | Publication date |
|---|---|
| DE830466C (de) | 1952-02-04 |
| CH291958A (fr) | 1953-07-15 |
| FR1031567A (fr) | 1953-06-24 |