CA496513A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA496513A
CA496513A CA496513A CA496513DA CA496513A CA 496513 A CA496513 A CA 496513A CA 496513 A CA496513 A CA 496513A CA 496513D A CA496513D A CA 496513DA CA 496513 A CA496513 A CA 496513A
Authority
CA
Canada
Prior art keywords
telephone systems
telephone
systems
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
CA496513A
Other languages
French (fr)
Inventor
A. Stallworthy Frank
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 CA496513A publication Critical patent/CA496513A/en
Expired legal-status Critical Current

Links

CA496513A Telephone systems Expired CA496513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA496513T

Publications (1)

Publication Number Publication Date
CA496513A true CA496513A (en) 1953-09-29

Family

ID=35641937

Family Applications (1)

Application Number Title Priority Date Filing Date
CA496513A Expired CA496513A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA496513A (en)

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