GB815651A - Improvements in or relating to automatic alarm devices - Google Patents
Improvements in or relating to automatic alarm devicesInfo
- Publication number
- GB815651A GB815651A GB731056A GB731056A GB815651A GB 815651 A GB815651 A GB 815651A GB 731056 A GB731056 A GB 731056A GB 731056 A GB731056 A GB 731056A GB 815651 A GB815651 A GB 815651A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- automatic alarm
- alarm devices
- devices
- automatic
- Prior art date
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV10069A DE1002787B (en) | 1956-01-24 | 1956-01-24 | Automatic alarm device |
FR1151552D FR1151552A (en) | 1956-03-08 | 1956-04-24 | Automatic warning device for receiving alarm signals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB815651A true GB815651A (en) | 1959-07-01 |
Family
ID=1628938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB731056A Expired GB815651A (en) | 1956-01-24 | 1956-03-08 | Improvements in or relating to automatic alarm devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB815651A (en) |
-
1956
- 1956-03-08 GB GB731056A patent/GB815651A/en not_active Expired
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