BE476714A - - Google Patents
Info
- Publication number
- BE476714A BE476714A BE476714DA BE476714A BE 476714 A BE476714 A BE 476714A BE 476714D A BE476714D A BE 476714DA BE 476714 A BE476714 A BE 476714A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
- H04L15/24—Apparatus or circuits at the receiving end
- H04L15/26—Apparatus or circuits at the receiving end operating only on reception of predetermined code signals, e.g. distress signals, party-line call signals
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Relay Circuits (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2644937X | 1947-01-29 | ||
| US1976A US2533765A (en) | 1947-01-29 | 1948-01-13 | Selector apparatus for alarm signals |
| FR59796T | 1949-12-13 | ||
| US177267A US2644937A (en) | 1947-01-29 | 1950-08-02 | Apparatus for the transmission of alarm signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE476714A true BE476714A (en:Method) |
Family
ID=32303557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE476714D BE476714A (en:Method) | 1947-01-29 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2644937A (en:Method) |
| BE (1) | BE476714A (en:Method) |
| FR (2) | FR937297A (en:Method) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1967396A (en) * | 1927-12-02 | 1934-07-24 | Louis L E Chauveau | Alarm selector apparatus |
| US1970455A (en) * | 1929-04-29 | 1934-08-14 | Siemens Brothers & Co Ltd | Electric selector |
| US2462875A (en) * | 1944-08-15 | 1949-03-01 | Standard Telephones Cables Ltd | Automatic alarm signaling system |
-
0
- BE BE476714D patent/BE476714A/xx unknown
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1946
- 1946-12-10 FR FR937297D patent/FR937297A/fr not_active Expired
-
1949
- 1949-12-13 FR FR59796D patent/FR59796E/fr not_active Expired
-
1950
- 1950-08-02 US US177267A patent/US2644937A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR937297A (fr) | 1948-08-12 |
| FR59796E (fr) | 1954-07-19 |
| US2644937A (en) | 1953-07-07 |