GB360979A - - Google Patents

Info

Publication number
GB360979A
GB360979A GB24502/30A GB2450230A GB360979A GB 360979 A GB360979 A GB 360979A GB 24502/30 A GB24502/30 A GB 24502/30A GB 2450230 A GB2450230 A GB 2450230A GB 360979 A GB360979 A GB 360979A
Authority
GB
United Kingdom
Prior art keywords
relay
circuit
energizes
over
relays
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
GB24502/30A
Other languages
English (en)
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.)
Automatic Telephone Manufacturing Co Ltd
Original Assignee
Automatic Telephone Manufacturing Co Ltd
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 Automatic Telephone Manufacturing Co Ltd filed Critical Automatic Telephone Manufacturing Co Ltd
Publication of GB360979A publication Critical patent/GB360979A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/009—Signalling of the alarm condition to a substation whose identity is signalled to a central station, e.g. relaying alarm signals in order to extend communication range

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
GB24502/30A 1929-09-14 1930-08-15 Expired GB360979A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US360979TA 1929-09-14 1929-09-14

Publications (1)

Publication Number Publication Date
GB360979A true GB360979A (enrdf_load_stackoverflow) 1931-11-16

Family

ID=31946117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24502/30A Expired GB360979A (enrdf_load_stackoverflow) 1929-09-14 1930-08-15

Country Status (1)

Country Link
GB (1) GB360979A (enrdf_load_stackoverflow)

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