CA623298A - Photoelectric burglar alarm system - Google Patents

Photoelectric burglar alarm system

Info

Publication number
CA623298A
CA623298A CA623298A CA623298DA CA623298A CA 623298 A CA623298 A CA 623298A CA 623298 A CA623298 A CA 623298A CA 623298D A CA623298D A CA 623298DA CA 623298 A CA623298 A CA 623298A
Authority
CA
Canada
Prior art keywords
photoelectric
alarm system
burglar alarm
burglar
photoelectric burglar
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
CA623298A
Inventor
T. Mcdonough Vincent
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.)
American District Telegraph Co
Original Assignee
American District Telegraph Co
Publication date
Application granted granted Critical
Publication of CA623298A publication Critical patent/CA623298A/en
Expired legal-status Critical Current

Links

CA623298A Photoelectric burglar alarm system Expired CA623298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA623298T

Publications (1)

Publication Number Publication Date
CA623298A true CA623298A (en) 1961-07-04

Family

ID=35878478

Family Applications (1)

Application Number Title Priority Date Filing Date
CA623298A Expired CA623298A (en) Photoelectric burglar alarm system

Country Status (1)

Country Link
CA (1) CA623298A (en)

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