CA177362A - Microphone differentiel - Google Patents

Microphone differentiel

Info

Publication number
CA177362A
CA177362A CA000177362A CA177362DA CA177362A CA 177362 A CA177362 A CA 177362A CA 000177362 A CA000177362 A CA 000177362A CA 177362D A CA177362D A CA 177362DA CA 177362 A CA177362 A CA 177362A
Authority
CA
Canada
Prior art keywords
differential microphone
microphone
differential
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
CA000177362A
Other languages
English (en)
Inventor
Paul J. Hackett
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.)
UNIVERSAL HIGH POWER TELEPHONE Co
Original Assignee
UNIVERSAL HIGH POWER TELEPHONE Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by UNIVERSAL HIGH POWER TELEPHONE Co filed Critical UNIVERSAL HIGH POWER TELEPHONE Co
Application granted granted Critical
Publication of CA177362A publication Critical patent/CA177362A/fr
Expired legal-status Critical Current

Links

CA000177362A 1916-11-15 1916-11-15 Microphone differentiel Expired CA177362A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA177362T 1916-11-15

Publications (1)

Publication Number Publication Date
CA177362A true CA177362A (fr) 1917-05-29

Family

ID=45297015

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000177362A Expired CA177362A (fr) 1916-11-15 1916-11-15 Microphone differentiel

Country Status (1)

Country Link
CA (1) CA177362A (fr)

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