CA589101A - Haut-parleur amplifie selectivement de telephone - Google Patents

Haut-parleur amplifie selectivement de telephone

Info

Publication number
CA589101A
CA589101A CA589101A CA589101DA CA589101A CA 589101 A CA589101 A CA 589101A CA 589101 A CA589101 A CA 589101A CA 589101D A CA589101D A CA 589101DA CA 589101 A CA589101 A CA 589101A
Authority
CA
Canada
Prior art keywords
selectively amplifying
speaking telephone
loud
amplifying loud
speaking
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
CA589101A
Other languages
English (en)
Inventor
Joseph F. Houdek, Jr.
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
Publication date
Application granted granted Critical
Publication of CA589101A publication Critical patent/CA589101A/fr
Expired legal-status Critical Current

Links

CA589101A Haut-parleur amplifie selectivement de telephone Expired CA589101A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA589101T

Publications (1)

Publication Number Publication Date
CA589101A true CA589101A (fr) 1959-12-15

Family

ID=35802642

Family Applications (1)

Application Number Title Priority Date Filing Date
CA589101A Expired CA589101A (fr) Haut-parleur amplifie selectivement de telephone

Country Status (1)

Country Link
CA (1) CA589101A (fr)

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