CA497642A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA497642A
CA497642A CA497642A CA497642DA CA497642A CA 497642 A CA497642 A CA 497642A CA 497642 A CA497642 A CA 497642A CA 497642D A CA497642D A CA 497642DA CA 497642 A CA497642 A CA 497642A
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
CA497642A
Other languages
French (fr)
Inventor
A. Hensler Bernard
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 CA497642A publication Critical patent/CA497642A/en
Expired legal-status Critical Current

Links

CA497642A Telephone systems Expired CA497642A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA497642T

Publications (1)

Publication Number Publication Date
CA497642A true CA497642A (en) 1953-11-10

Family

ID=35643073

Family Applications (1)

Application Number Title Priority Date Filing Date
CA497642A Expired CA497642A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA497642A (en)

Similar Documents

Publication Publication Date Title
CA491104A (en) Telephone systems
CA493123A (en) Telephone systems
CA493483A (en) Telephone systems
CA493485A (en) Telephone systems
CA493486A (en) Telephone systems
CA493889A (en) Telephone systems
CA494014A (en) Telephone systems
CA495874A (en) Telephone systems
CA496513A (en) Telephone systems
CA496514A (en) Telephone systems
CA496858A (en) Telephone systems
CA497078A (en) Telephone systems
CA497326A (en) Telephone systems
CA497641A (en) Telephone systems
CA497642A (en) Telephone systems
CA498036A (en) Telephone systems
CA498037A (en) Telephone systems
CA498762A (en) Telephone systems
CA498859A (en) Telephone systems
CA491719A (en) Telephone system
CA493424A (en) Telephone system
CA493484A (en) Telephone system
CA497327A (en) Telecommunication systems
CA496095A (en) Telephone or like systems
CA493490A (en) Telephone or like systems