CA602132A - Telephone alarm system - Google Patents

Telephone alarm system

Info

Publication number
CA602132A
CA602132A CA602132A CA602132DA CA602132A CA 602132 A CA602132 A CA 602132A CA 602132 A CA602132 A CA 602132A CA 602132D A CA602132D A CA 602132DA CA 602132 A CA602132 A CA 602132A
Authority
CA
Canada
Prior art keywords
alarm system
telephone alarm
telephone
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
CA602132A
Inventor
B. Weinberg Seymour
H. Williford Oscar
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Publication date
Application granted granted Critical
Publication of CA602132A publication Critical patent/CA602132A/en
Expired legal-status Critical Current

Links

CA602132A Telephone alarm system Expired CA602132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA602132T

Publications (1)

Publication Number Publication Date
CA602132A true CA602132A (en) 1960-07-19

Family

ID=35817925

Family Applications (1)

Application Number Title Priority Date Filing Date
CA602132A Expired CA602132A (en) Telephone alarm system

Country Status (1)

Country Link
CA (1) CA602132A (en)

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