CA423688A - Circuit d'instrument telephonique - Google Patents

Circuit d'instrument telephonique

Info

Publication number
CA423688A
CA423688A CA423688A CA423688DA CA423688A CA 423688 A CA423688 A CA 423688A CA 423688 A CA423688 A CA 423688A CA 423688D A CA423688D A CA 423688DA CA 423688 A CA423688 A CA 423688A
Authority
CA
Canada
Prior art keywords
telephone instrument
instrument circuit
circuit
telephone
instrument
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
CA423688A
Other languages
English (en)
Inventor
William Sutton George
Herbert Grinsted William
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 CA423688A publication Critical patent/CA423688A/fr
Expired legal-status Critical Current

Links

CA423688A Circuit d'instrument telephonique Expired CA423688A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423688T

Publications (1)

Publication Number Publication Date
CA423688A true CA423688A (fr) 1944-11-07

Family

ID=35534696

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423688A Expired CA423688A (fr) Circuit d'instrument telephonique

Country Status (1)

Country Link
CA (1) CA423688A (fr)

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