CA15134A - Improvements on telephone exchange instruments - Google Patents

Improvements on telephone exchange instruments

Info

Publication number
CA15134A
CA15134A CA000015134A CA15134DA CA15134A CA 15134 A CA15134 A CA 15134A CA 000015134 A CA000015134 A CA 000015134A CA 15134D A CA15134D A CA 15134DA CA 15134 A CA15134 A CA 15134A
Authority
CA
Canada
Prior art keywords
telephone exchange
exchange instruments
instruments
telephone
exchange
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
CA000015134A
Other languages
French (fr)
Inventor
Elihu T. Guimby
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 CA15134A publication Critical patent/CA15134A/en
Expired legal-status Critical Current

Links

CA000015134A Improvements on telephone exchange instruments Expired CA15134A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA15134T

Publications (1)

Publication Number Publication Date
CA15134A true CA15134A (en) 1882-07-19

Family

ID=45131678

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000015134A Expired CA15134A (en) Improvements on telephone exchange instruments

Country Status (1)

Country Link
CA (1) CA15134A (en)

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