CA524631A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA524631A
CA524631A CA524631A CA524631DA CA524631A CA 524631 A CA524631 A CA 524631A CA 524631 A CA524631 A CA 524631A CA 524631D A CA524631D A CA 524631DA CA 524631 A CA524631 A CA 524631A
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
CA524631A
Other languages
French (fr)
Inventor
A. Hensler Bernard
R. Yates Kenneth
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 CA524631A publication Critical patent/CA524631A/en
Expired legal-status Critical Current

Links

CA524631A Telephone systems Expired CA524631A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA524631T

Publications (1)

Publication Number Publication Date
CA524631A true CA524631A (en) 1956-05-01

Family

ID=35678343

Family Applications (1)

Application Number Title Priority Date Filing Date
CA524631A Expired CA524631A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA524631A (en)

Similar Documents

Publication Publication Date Title
CA580092A (en) Switching systems
CA530739A (en) Telephone systems
CA521856A (en) Telephone systems
CA522332A (en) Telephone systems
CA524594A (en) Telephone systems
CA525662A (en) Telephone systems
CA521394A (en) Telephone systems
CA533592A (en) Telephone systems
CA524631A (en) Telephone systems
CA533984A (en) Telephone system
CA530442A (en) Telecommunication systems
CA532978A (en) Telecommunication systems
CA527080A (en) Telephone answering systems
CA522215A (en) Intercommunication telephone systems
CA532449A (en) Automatic telephone systems
CA524054A (en) Automatic telephone systems
CA522080A (en) Pulsating-current systems
AU213260B2 (en) Improvements in telephone systems
AU205812B2 (en) Improvements in telephone systems
AU209194B2 (en) Improvements in telephone systems
AU210879B2 (en) Improvements in telephone systems
AU212284B2 (en) Improvements in telephone systems
AU215161B2 (en) Improvements in telephone systems
AU215332B2 (en) Improvements in telephone systems
CA546624A (en) Telephone systems