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CA984481A - Optical pulse burglar alarm - Google Patents

Optical pulse burglar alarm

Info

Publication number
CA984481A
CA984481A CA142,788A CA142788A CA984481A CA 984481 A CA984481 A CA 984481A CA 142788 A CA142788 A CA 142788A CA 984481 A CA984481 A CA 984481A
Authority
CA
Canada
Prior art keywords
optical pulse
burglar alarm
burglar
alarm
pulse
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
CA142,788A
Other versions
CA142788S (en
Inventor
Alan L. Litman
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
Priority to CA142,788A priority Critical patent/CA984481A/en
Application granted granted Critical
Publication of CA984481A publication Critical patent/CA984481A/en
Expired legal-status Critical Current

Links

CA142,788A 1972-05-23 1972-05-23 Optical pulse burglar alarm Expired CA984481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA142,788A CA984481A (en) 1972-05-23 1972-05-23 Optical pulse burglar alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA142,788A CA984481A (en) 1972-05-23 1972-05-23 Optical pulse burglar alarm

Publications (1)

Publication Number Publication Date
CA984481A true CA984481A (en) 1976-02-24

Family

ID=4093340

Family Applications (1)

Application Number Title Priority Date Filing Date
CA142,788A Expired CA984481A (en) 1972-05-23 1972-05-23 Optical pulse burglar alarm

Country Status (1)

Country Link
CA (1) CA984481A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458146A (en) * 1980-05-09 1984-07-03 Siemens Aktiengesellschaft Photoelectric movement detector with varying amplitude light source

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458146A (en) * 1980-05-09 1984-07-03 Siemens Aktiengesellschaft Photoelectric movement detector with varying amplitude light source

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