CA417451A - Telephone system - Google Patents

Telephone system

Info

Publication number
CA417451A
CA417451A CA417451A CA417451DA CA417451A CA 417451 A CA417451 A CA 417451A CA 417451 A CA417451 A CA 417451A CA 417451D A CA417451D A CA 417451DA CA 417451 A CA417451 A CA 417451A
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
CA417451A
Other languages
French (fr)
Inventor
Langsford Clay David
John Clifford Bartlett Charles
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
Publication date
Application granted granted Critical
Publication of CA417451A publication Critical patent/CA417451A/en
Expired legal-status Critical Current

Links

CA417451A Telephone system Expired CA417451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA417451T

Publications (1)

Publication Number Publication Date
CA417451A true CA417451A (en) 1943-12-28

Family

ID=35526698

Family Applications (1)

Application Number Title Priority Date Filing Date
CA417451A Expired CA417451A (en) Telephone system

Country Status (1)

Country Link
CA (1) CA417451A (en)

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