FR937297A - Alarm selector device - Google Patents

Alarm selector device

Info

Publication number
FR937297A
FR937297A FR937297DA FR937297A FR 937297 A FR937297 A FR 937297A FR 937297D A FR937297D A FR 937297DA FR 937297 A FR937297 A FR 937297A
Authority
FR
France
Prior art keywords
selector device
alarm selector
alarm
selector
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)
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Priority claimed from US1976A external-priority patent/US2533765A/en
Application granted granted Critical
Publication of FR937297A publication Critical patent/FR937297A/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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Relay Circuits (AREA)
FR937297D 1947-01-29 1946-12-10 Alarm selector device Expired FR937297A (en)

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
FR937297A true FR937297A (en) 1948-08-12

Family

ID=32303557

Family Applications (2)

Application Number Title Priority Date Filing Date
FR937297D Expired FR937297A (en) 1947-01-29 1946-12-10 Alarm selector device
FR59796D Expired FR59796E (en) 1947-01-29 1949-12-13 Alarm selector device

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR59796D Expired FR59796E (en) 1947-01-29 1949-12-13 Alarm selector device

Country Status (3)

Country Link
US (1) US2644937A (en)
BE (1) BE476714A (en)
FR (2) FR937297A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR59796E (en) 1954-07-19
US2644937A (en) 1953-07-07
BE476714A (en)

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