CA605782A - Loud-speaking telephone systems - Google Patents

Loud-speaking telephone systems

Info

Publication number
CA605782A
CA605782A CA605782A CA605782DA CA605782A CA 605782 A CA605782 A CA 605782A CA 605782 A CA605782 A CA 605782A CA 605782D A CA605782D A CA 605782DA CA 605782 A CA605782 A CA 605782A
Authority
CA
Canada
Prior art keywords
loud
telephone systems
speaking telephone
speaking
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
CA605782A
Inventor
F. Laurence Roger
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.)
Winston Electronics Ltd
Original Assignee
Winston Electronics Ltd
Publication date
Application granted granted Critical
Publication of CA605782A publication Critical patent/CA605782A/en
Expired legal-status Critical Current

Links

CA605782A Loud-speaking telephone systems Expired CA605782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA605782T

Publications (1)

Publication Number Publication Date
CA605782A true CA605782A (en) 1960-09-27

Family

ID=35827258

Family Applications (1)

Application Number Title Priority Date Filing Date
CA605782A Expired CA605782A (en) Loud-speaking telephone systems

Country Status (1)

Country Link
CA (1) CA605782A (en)

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