CA932884A - Alarm signalling systems - Google Patents

Alarm signalling systems

Info

Publication number
CA932884A
CA932884A CA126864A CA126864A CA932884A CA 932884 A CA932884 A CA 932884A CA 126864 A CA126864 A CA 126864A CA 126864 A CA126864 A CA 126864A CA 932884 A CA932884 A CA 932884A
Authority
CA
Canada
Prior art keywords
signalling systems
alarm signalling
alarm
systems
signalling
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
CA126864A
Other versions
CA126864S (en
Inventor
R. Brown Preston
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA932884A publication Critical patent/CA932884A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/04—Telephonic communication systems specially adapted for combination with other electrical systems with alarm systems, e.g. fire, police or burglar alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Devices For Supply Of Signal Current (AREA)
CA126864A 1970-11-05 1971-11-04 Alarm signalling systems Expired CA932884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8726770A 1970-11-05 1970-11-05

Publications (1)

Publication Number Publication Date
CA932884A true CA932884A (en) 1973-08-28

Family

ID=22204134

Family Applications (1)

Application Number Title Priority Date Filing Date
CA126864A Expired CA932884A (en) 1970-11-05 1971-11-04 Alarm signalling systems

Country Status (10)

Country Link
AU (1) AU464402B2 (en)
BE (1) BE774634A (en)
CA (1) CA932884A (en)
CH (1) CH555574A (en)
DE (1) DE2155156A1 (en)
ES (1) ES396721A1 (en)
FR (1) FR2112461B1 (en)
GB (1) GB1375579A (en)
IT (1) IT939691B (en)
NL (1) NL7115039A (en)

Also Published As

Publication number Publication date
AU3500071A (en) 1973-05-03
DE2155156A1 (en) 1972-05-10
FR2112461A1 (en) 1972-06-16
FR2112461B1 (en) 1976-03-26
ES396721A1 (en) 1974-05-16
BE774634A (en) 1972-02-14
NL7115039A (en) 1972-05-09
IT939691B (en) 1973-02-10
CH555574A (en) 1974-10-31
GB1375579A (en) 1974-11-27
AU464402B2 (en) 1975-08-28

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