FR915181A - Automatic alarm signaling system - Google Patents

Automatic alarm signaling system

Info

Publication number
FR915181A
FR915181A FR915181DA FR915181A FR 915181 A FR915181 A FR 915181A FR 915181D A FR915181D A FR 915181DA FR 915181 A FR915181 A FR 915181A
Authority
FR
France
Prior art keywords
signaling system
automatic alarm
alarm signaling
automatic
signaling
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
Application number
Other languages
French (fr)
Inventor
William Cobb Lane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR915181A publication Critical patent/FR915181A/en
Expired legal-status Critical Current

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
FR915181D 1944-08-15 1945-09-29 Automatic alarm signaling system Expired FR915181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US549561A US2462875A (en) 1944-08-15 1944-08-15 Automatic alarm signaling system

Publications (1)

Publication Number Publication Date
FR915181A true FR915181A (en) 1946-10-29

Family

ID=24193500

Family Applications (1)

Application Number Title Priority Date Filing Date
FR915181D Expired FR915181A (en) 1944-08-15 1945-09-29 Automatic alarm signaling system

Country Status (3)

Country Link
US (1) US2462875A (en)
FR (1) FR915181A (en)
GB (1) GB611219A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE476714A (en) * 1947-01-29
US2626382A (en) * 1950-04-13 1953-01-20 Gen Railway Signal Co Air traffic control system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US361020A (en) * 1887-04-12 Telegraphic alarm-signal
US888153A (en) * 1907-12-23 1908-05-19 Siemens Ag System for selecting one of several receivers connected to a common conductor.
FR543176A (en) * 1921-03-22 1922-08-29 Radio Electr Soc Fr Call selector
GB185848A (en) * 1921-06-13 1922-09-13 Arthur William Whistlecroft Improvements in electric calling devices
BE356113A (en) * 1927-12-02
US1888904A (en) * 1928-10-16 1932-11-22 Brauer Ernst Station calling device
US1968078A (en) * 1929-05-17 1934-07-31 Associated Electric Lab Inc Selective code receiver
US2094733A (en) * 1933-05-25 1937-10-05 Rca Corp Automatic alarm selector

Also Published As

Publication number Publication date
US2462875A (en) 1949-03-01
GB611219A (en) 1948-10-27

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