CA612173A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA612173A
CA612173A CA612173A CA612173DA CA612173A CA 612173 A CA612173 A CA 612173A CA 612173 A CA612173 A CA 612173A CA 612173D A CA612173D A CA 612173DA CA 612173 A CA612173 A CA 612173A
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
CA612173A
Inventor
Drake 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 CA612173A publication Critical patent/CA612173A/en
Expired legal-status Critical Current

Links

CA612173A Telephone systems Expired CA612173A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA612173T

Publications (1)

Publication Number Publication Date
CA612173A true CA612173A (en) 1961-01-10

Family

ID=35854494

Family Applications (1)

Application Number Title Priority Date Filing Date
CA612173A Expired CA612173A (en) Telephone systems

Country Status (1)

Country Link
CA (1) CA612173A (en)

Similar Documents

Publication Publication Date Title
CA627432A (en) Telephone systems
CA612173A (en) Telephone systems
CA614962A (en) Telephone systems
CA619776A (en) Telephone systems
CA623535A (en) Telephone systems
CA627316A (en) Telephone systems
CA612780A (en) Telephone systems
CA621614A (en) Telephone system
CA625957A (en) Telephone system
CA633341A (en) Telephone or like systems
CA615508A (en) Communication systems
CA618934A (en) Communication systems
CA617161A (en) Step-by-step telephone systems
CA641506A (en) Telephone systems
AU265813B2 (en) Telephone systems
CA643064A (en) Telephone systems
CA650573A (en) Telephone systems
CA611943A (en) Automatic telephone systems
CA616212A (en) Automatic telephone systems
CA620623A (en) Automatic telephone systems
CA625597A (en) Automatic telephone systems
CA615299A (en) Communications systems
CA616182A (en) Box-wrapping systems
AU275806B2 (en) Electrostatic-photograph systems
CA590349A (en) Telephone systems