CA31750A - Telephone substation apparatus - Google Patents

Telephone substation apparatus

Info

Publication number
CA31750A
CA31750A CA000031750A CA31750DA CA31750A CA 31750 A CA31750 A CA 31750A CA 000031750 A CA000031750 A CA 000031750A CA 31750D A CA31750D A CA 31750DA CA 31750 A CA31750 A CA 31750A
Authority
CA
Canada
Prior art keywords
substation apparatus
telephone substation
telephone
substation
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
CA000031750A
Other languages
French (fr)
Inventor
Theodore N. Vail
John A. Seely
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
Publication date
Application granted granted Critical
Publication of CA31750A publication Critical patent/CA31750A/en
Expired legal-status Critical Current

Links

CA000031750A Telephone substation apparatus Expired CA31750A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA31750T

Publications (1)

Publication Number Publication Date
CA31750A true CA31750A (en) 1889-07-17

Family

ID=45148290

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000031750A Expired CA31750A (en) Telephone substation apparatus

Country Status (1)

Country Link
CA (1) CA31750A (en)

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