CA942871A - Lock-alarm system - Google Patents

Lock-alarm system

Info

Publication number
CA942871A
CA942871A CA106,822A CA106822A CA942871A CA 942871 A CA942871 A CA 942871A CA 106822 A CA106822 A CA 106822A CA 942871 A CA942871 A CA 942871A
Authority
CA
Canada
Prior art keywords
alarm
lock
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
CA106,822A
Inventor
Paul M. Hawkins
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 to US56854666A priority Critical
Priority to CA996622 priority
Application filed by Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to CA106,822A priority patent/CA942871A/en
Priority claimed from CA180,085A external-priority patent/CA959560A/en
Application granted granted Critical
Publication of CA942871A publication Critical patent/CA942871A/en
Expired legal-status Critical Current

Links

CA106,822A 1966-07-28 1971-03-03 Lock-alarm system Expired CA942871A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US56854666A true 1966-07-28 1966-07-28
CA996622 1967-07-28
CA106,822A CA942871A (en) 1966-07-28 1971-03-03 Lock-alarm system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA106,822A CA942871A (en) 1966-07-28 1971-03-03 Lock-alarm system
CA180,085A CA959560A (en) 1966-07-28 1973-08-31 Protection system

Publications (1)

Publication Number Publication Date
CA942871A true CA942871A (en) 1974-02-26

Family

ID=27161044

Family Applications (1)

Application Number Title Priority Date Filing Date
CA106,822A Expired CA942871A (en) 1966-07-28 1971-03-03 Lock-alarm system

Country Status (1)

Country Link
CA (1) CA942871A (en)

Also Published As

Publication number Publication date
CA942871A2 (en)

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