CA1010529A - Ultrasonic-microwave doppler intrusion alarm system - Google Patents

Ultrasonic-microwave doppler intrusion alarm system

Info

Publication number
CA1010529A
CA1010529A CA259,166A CA259166A CA1010529A CA 1010529 A CA1010529 A CA 1010529A CA 259166 A CA259166 A CA 259166A CA 1010529 A CA1010529 A CA 1010529A
Authority
CA
Canada
Prior art keywords
ultrasonic
alarm system
intrusion alarm
microwave doppler
doppler intrusion
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
CA259,166A
Inventor
David N. Gershberg
Alex Y. Lee
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.)
Raytheon Co
Original Assignee
E Systems Inc
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
Priority claimed from US00273596A external-priority patent/US3801978A/en
Application filed by E Systems Inc filed Critical E Systems Inc
Priority to CA259,166A priority Critical patent/CA1010529A/en
Application granted granted Critical
Publication of CA1010529A publication Critical patent/CA1010529A/en
Expired legal-status Critical Current

Links

CA259,166A 1972-07-20 1976-08-16 Ultrasonic-microwave doppler intrusion alarm system Expired CA1010529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA259,166A CA1010529A (en) 1972-07-20 1976-08-16 Ultrasonic-microwave doppler intrusion alarm system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US00273596A US3801978A (en) 1972-07-20 1972-07-20 Ultrasonic-microwave doppler intrusion alarm system
CA172,645A CA1005876A (en) 1972-07-20 1973-05-29 Ultrasonic-microwave doppler intrusion alarm system
CA259,166A CA1010529A (en) 1972-07-20 1976-08-16 Ultrasonic-microwave doppler intrusion alarm system

Publications (1)

Publication Number Publication Date
CA1010529A true CA1010529A (en) 1977-05-17

Family

ID=27162819

Family Applications (1)

Application Number Title Priority Date Filing Date
CA259,166A Expired CA1010529A (en) 1972-07-20 1976-08-16 Ultrasonic-microwave doppler intrusion alarm system

Country Status (1)

Country Link
CA (1) CA1010529A (en)

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