CA317679A - Systeme de central telegraphique - Google Patents

Systeme de central telegraphique

Info

Publication number
CA317679A
CA317679A CA317679A CA317679DA CA317679A CA 317679 A CA317679 A CA 317679A CA 317679 A CA317679 A CA 317679A CA 317679D A CA317679D A CA 317679DA CA 317679 A CA317679 A CA 317679A
Authority
CA
Canada
Prior art keywords
exchange system
telegraph exchange
telegraph
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
CA317679A
Other languages
English (en)
Inventor
Foster Connery Alder
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.)
POSTAL TELEGRAPH CABLE Co
Original Assignee
POSTAL TELEGRAPH CABLE Co
Publication date
Application granted granted Critical
Publication of CA317679A publication Critical patent/CA317679A/fr
Expired legal-status Critical Current

Links

CA317679A Systeme de central telegraphique Expired CA317679A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA317679T

Publications (1)

Publication Number Publication Date
CA317679A true CA317679A (fr) 1931-12-01

Family

ID=35278235

Family Applications (1)

Application Number Title Priority Date Filing Date
CA317679A Expired CA317679A (fr) Systeme de central telegraphique

Country Status (1)

Country Link
CA (1) CA317679A (fr)

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