BE348631A - - Google Patents
Info
- Publication number
- BE348631A BE348631A BE348631DA BE348631A BE 348631 A BE348631 A BE 348631A BE 348631D A BE348631D A BE 348631DA BE 348631 A BE348631 A BE 348631A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems
- H04M11/045—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems using recorded signals, e.g. speech
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW78258D DE516520C (de) | Notrufanlage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE348631A true BE348631A (fr) |
Family
ID=7610537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE348631D BE348631A (fr) |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE348631A (fr) |
| CH (1) | CH133633A (fr) |
| DE (1) | DE516520C (fr) |
| FR (1) | FR652501A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1013325B (de) * | 1955-07-27 | 1957-08-08 | Walther Fischhoeder | Automatische Alarmvorrichtung |
-
0
- DE DEW78258D patent/DE516520C/de not_active Expired
- BE BE348631D patent/BE348631A/xx unknown
-
1928
- 1928-01-23 CH CH133633D patent/CH133633A/de unknown
- 1928-02-08 FR FR652501D patent/FR652501A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE516520C (de) | 1931-01-24 |
| FR652501A (fr) | 1929-03-09 |
| CH133633A (de) | 1929-06-15 |
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|---|---|---|
| US3245066A (en) | Signalling system | |
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| CH169517A (de) | Selbsttätige mit einer Teilnehmerstation einer Fernsprechanlage zusammenarbeitende Alarmrufeinrichtung. | |
| DE1158412B (de) | Einbruchsalarmanlage | |
| DE1112552B (de) | Notrufeinrichtung bei Muenzfernsprechern |