CA238316A - Microphone - Google Patents

Microphone

Info

Publication number
CA238316A
CA238316A CA238316A CA238316DA CA238316A CA 238316 A CA238316 A CA 238316A CA 238316 A CA238316 A CA 238316A CA 238316D A CA238316D A CA 238316DA CA 238316 A CA238316 A CA 238316A
Authority
CA
Canada
Prior art keywords
microphone
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
CA238316A
Other languages
English (en)
Inventor
Willard Case Theodore
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.)
CASE RESEARCH LABORATORY
Original Assignee
CASE RESEARCH LABORATORY
Publication date
Application granted granted Critical
Publication of CA238316A publication Critical patent/CA238316A/fr
Expired legal-status Critical Current

Links

CA238316A Microphone Expired CA238316A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA238316T

Publications (1)

Publication Number Publication Date
CA238316A true CA238316A (fr) 1924-03-04

Family

ID=35142348

Family Applications (1)

Application Number Title Priority Date Filing Date
CA238316A Expired CA238316A (fr) Microphone

Country Status (1)

Country Link
CA (1) CA238316A (fr)

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