FR956829A - - Google Patents
Info
- Publication number
- FR956829A FR956829A FR956829DA FR956829A FR 956829 A FR956829 A FR 956829A FR 956829D A FR956829D A FR 956829DA FR 956829 A FR956829 A FR 956829A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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)
- Emergency Alarm Devices (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB26447/46A GB628574A (en) | 1946-09-03 | 1946-09-03 | Improvements in automatic burglar and fire alarms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR956829A true FR956829A (xx) | 1950-02-08 |
Family
ID=10243754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR956829D Expired FR956829A (xx) | 1946-09-03 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2537599A (xx) |
| FR (1) | FR956829A (xx) |
| GB (1) | GB628574A (xx) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB682276A (en) * | 1950-06-07 | 1952-11-05 | Samuel Dunseith Mckellen | Improvements in or relating to automatic alarm devices |
| US2768239A (en) * | 1953-05-11 | 1956-10-23 | Elmer E Foster | Alarm system |
| US2830119A (en) * | 1954-02-19 | 1958-04-08 | John P Zimmerman | Emergency alarm and reporting system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1627612A (en) * | 1922-12-13 | 1927-05-10 | William J Luse | Alarm system |
| BE424390A (xx) * | 1936-11-04 | |||
| NL61918C (xx) * | 1937-02-15 |
-
0
- FR FR956829D patent/FR956829A/fr not_active Expired
-
1946
- 1946-09-03 GB GB26447/46A patent/GB628574A/en not_active Expired
-
1947
- 1947-11-15 US US786291A patent/US2537599A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB628574A (en) | 1949-08-31 |
| US2537599A (en) | 1951-01-09 |