CA181320A - Systeme telephonique - Google Patents

Systeme telephonique

Info

Publication number
CA181320A
CA181320A CA000181320A CA181320DA CA181320A CA 181320 A CA181320 A CA 181320A CA 000181320 A CA000181320 A CA 000181320A CA 181320D A CA181320D A CA 181320DA CA 181320 A CA181320 A CA 181320A
Authority
CA
Canada
Prior art keywords
telephone system
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
CA000181320A
Other languages
English (en)
Inventor
Oscar Grahm
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.)
Relay Automatic Telephone Company Ltd
Original Assignee
Relay Automatic Telephone Company Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Relay Automatic Telephone Company Ltd filed Critical Relay Automatic Telephone Company Ltd
Application granted granted Critical
Publication of CA181320A publication Critical patent/CA181320A/fr
Expired legal-status Critical Current

Links

CA000181320A 1917-08-18 1917-08-18 Systeme telephonique Expired CA181320A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA181320T 1917-08-18

Publications (1)

Publication Number Publication Date
CA181320A true CA181320A (fr) 1917-12-25

Family

ID=45300972

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000181320A Expired CA181320A (fr) 1917-08-18 1917-08-18 Systeme telephonique

Country Status (1)

Country Link
CA (1) CA181320A (fr)

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