CA948800A - Security alarm system - Google Patents

Security alarm system

Info

Publication number
CA948800A
CA948800A CA117,057A CA117057A CA948800A CA 948800 A CA948800 A CA 948800A CA 117057 A CA117057 A CA 117057A CA 948800 A CA948800 A CA 948800A
Authority
CA
Canada
Prior art keywords
alarm system
security alarm
security
alarm
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
CA117,057A
Other versions
CA117057S (en
Inventor
Carlo Dan
James F. Pinkham
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.)
MULTRA-GUARD
Original Assignee
MULTRA-GUARD
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 MULTRA-GUARD filed Critical MULTRA-GUARD
Application granted granted Critical
Publication of CA948800A publication Critical patent/CA948800A/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)
  • Burglar Alarm Systems (AREA)
CA117,057A 1970-07-30 1971-06-30 Security alarm system Expired CA948800A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5941370A 1970-07-30 1970-07-30

Publications (1)

Publication Number Publication Date
CA948800A true CA948800A (en) 1974-06-04

Family

ID=22022797

Family Applications (1)

Application Number Title Priority Date Filing Date
CA117,057A Expired CA948800A (en) 1970-07-30 1971-06-30 Security alarm system

Country Status (2)

Country Link
US (1) US3678509A (en)
CA (1) CA948800A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848241A (en) * 1973-03-15 1974-11-12 Baker Ind Inc Test and integrity equipment for a mcculloh system
FR2289017A1 (en) * 1974-10-23 1976-05-21 Crit Telephonie Centralised surveillance system - connects noise detectors to central receivers above set noise level or on break in
US3978475A (en) * 1975-05-29 1976-08-31 Westinghouse Electric Corporation Trouble indicator circuit for a security system
US3990075A (en) * 1975-05-29 1976-11-02 Westinghouse Electric Corporation Solid state security system
US4064507A (en) * 1975-05-29 1977-12-20 Westinghouse Electric Corporation Noise generator circuit for a security system
US3978478A (en) * 1975-05-29 1976-08-31 Westinghouse Electric Corporation Reset circuit for a security system
US3978479A (en) * 1975-05-29 1976-08-31 Westinghouse Electric Corporation Solid state security system
US3978477A (en) * 1975-05-29 1976-08-31 Westinghouse Electric Corporation Automatic test sequence circuit for a security system
US4060803A (en) * 1976-02-09 1977-11-29 Audio Alert, Inc. Security alarm system with audio monitoring capability
US4506254A (en) * 1982-11-10 1985-03-19 General Signal Corporation Alarm system with detectors and signaling devices on the same cable pair
US5200734A (en) * 1992-01-06 1993-04-06 Lin Tieng Fu Detecting and alarming system for detecting shortcircuited or broken circuit

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052057A (en) * 1929-01-04 1936-08-25 Reid Frederick Fire alarm system
US2424554A (en) * 1939-08-23 1947-07-29 Int Standard Electric Corp Electrical signaling system
US2840802A (en) * 1953-06-04 1958-06-24 Westinghouse Electric Corp Control systems
US2926344A (en) * 1956-08-13 1960-02-23 Koiled Kords Inc Multiple frequency signalling method and system
US3010100A (en) * 1958-06-30 1961-11-21 American District Telegraph Co Direct current operated burglar alarm system with alternating current supervision
US3174143A (en) * 1961-12-11 1965-03-16 Phillip A Akin Electrical protective system
US3167755A (en) * 1963-02-11 1965-01-26 Howard M Larrick Monitor circuits for detection and alarm systems
US3351934A (en) * 1965-05-19 1967-11-07 Honeywell Inc Supervised alarm system
US3470554A (en) * 1966-03-09 1969-09-30 Johnson Service Co Intrusion alarm system having authorization capability with tamper detection means

Also Published As

Publication number Publication date
US3678509A (en) 1972-07-18

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