CA420936A - Telephone substation - Google Patents

Telephone substation

Info

Publication number
CA420936A
CA420936A CA420936A CA420936DA CA420936A CA 420936 A CA420936 A CA 420936A CA 420936 A CA420936 A CA 420936A CA 420936D A CA420936D A CA 420936DA CA 420936 A CA420936 A CA 420936A
Authority
CA
Canada
Prior art keywords
telephone substation
substation
telephone
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
CA420936A
Other languages
French (fr)
Inventor
Henry Voss John
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
Associated Telephone and Telegraph Co
Original Assignee
Automatic Electric Laboratories Inc
Associated Telephone and Telegraph Co
Publication date
Application granted granted Critical
Publication of CA420936A publication Critical patent/CA420936A/en
Expired legal-status Critical Current

Links

CA420936A Telephone substation Expired CA420936A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA420936T

Publications (1)

Publication Number Publication Date
CA420936A true CA420936A (en) 1944-06-20

Family

ID=35531882

Family Applications (1)

Application Number Title Priority Date Filing Date
CA420936A Expired CA420936A (en) Telephone substation

Country Status (1)

Country Link
CA (1) CA420936A (en)

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