CA268777A - Telephonic sound amplifier - Google Patents

Telephonic sound amplifier

Info

Publication number
CA268777A
CA268777A CA268777A CA268777DA CA268777A CA 268777 A CA268777 A CA 268777A CA 268777 A CA268777 A CA 268777A CA 268777D A CA268777D A CA 268777DA CA 268777 A CA268777 A CA 268777A
Authority
CA
Canada
Prior art keywords
sound amplifier
telephonic
telephonic sound
amplifier
sound
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
CA268777A
Other languages
French (fr)
Inventor
Graham Edward Alfred
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA268777A publication Critical patent/CA268777A/en
Expired legal-status Critical Current

Links

CA268777A Telephonic sound amplifier Expired CA268777A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA268777T

Publications (1)

Publication Number Publication Date
CA268777A true CA268777A (en) 1927-03-01

Family

ID=35198807

Family Applications (1)

Application Number Title Priority Date Filing Date
CA268777A Expired CA268777A (en) Telephonic sound amplifier

Country Status (1)

Country Link
CA (1) CA268777A (en)

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