CA215509A - Systeme telephonique de train - Google Patents

Systeme telephonique de train

Info

Publication number
CA215509A
CA215509A CA215509A CA215509DA CA215509A CA 215509 A CA215509 A CA 215509A CA 215509 A CA215509 A CA 215509A CA 215509D A CA215509D A CA 215509DA CA 215509 A CA215509 A CA 215509A
Authority
CA
Canada
Prior art keywords
telephone system
train telephone
train
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
CA215509A
Other languages
English (en)
Inventor
Wallace Macfarlane William
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.)
MACFARLANE COMMUNICATIONS CORP
Original Assignee
MACFARLANE COMMUNICATIONS CORP
Publication date
Application granted granted Critical
Publication of CA215509A publication Critical patent/CA215509A/fr
Expired legal-status Critical Current

Links

CA215509A Systeme telephonique de train Expired CA215509A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA215509T

Publications (1)

Publication Number Publication Date
CA215509A true CA215509A (fr) 1922-01-31

Family

ID=35109953

Family Applications (1)

Application Number Title Priority Date Filing Date
CA215509A Expired CA215509A (fr) Systeme telephonique de train

Country Status (1)

Country Link
CA (1) CA215509A (fr)

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