CA495172A - Calling devices - Google Patents

Calling devices

Info

Publication number
CA495172A
CA495172A CA495172A CA495172DA CA495172A CA 495172 A CA495172 A CA 495172A CA 495172 A CA495172 A CA 495172A CA 495172D A CA495172D A CA 495172DA CA 495172 A CA495172 A CA 495172A
Authority
CA
Canada
Prior art keywords
calling devices
calling
devices
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
CA495172A
Other languages
French (fr)
Inventor
E. Wood Frederic
L. Sargisson Robert
Gienger Fred
Decker Erik
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.)
Automatic Electric Laboratories Inc
Original Assignee
Automatic Electric Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA495172A publication Critical patent/CA495172A/en
Expired legal-status Critical Current

Links

CA495172A Calling devices Expired CA495172A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA495172T

Publications (1)

Publication Number Publication Date
CA495172A true CA495172A (en) 1953-08-11

Family

ID=35640578

Family Applications (1)

Application Number Title Priority Date Filing Date
CA495172A Expired CA495172A (en) Calling devices

Country Status (1)

Country Link
CA (1) CA495172A (en)

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