CA139438A - Microphone - Google Patents

Microphone

Info

Publication number
CA139438A
CA139438A CA000139438A CA139438DA CA139438A CA 139438 A CA139438 A CA 139438A CA 000139438 A CA000139438 A CA 000139438A CA 139438D A CA139438D A CA 139438DA CA 139438 A CA139438 A CA 139438A
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
CA000139438A
Other languages
English (en)
Inventor
John J. Comer
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.)
AUTOMATIC ENUNCIATOR Co
Original Assignee
AUTOMATIC ENUNCIATOR 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 AUTOMATIC ENUNCIATOR Co filed Critical AUTOMATIC ENUNCIATOR Co
Application granted granted Critical
Publication of CA139438A publication Critical patent/CA139438A/fr
Expired legal-status Critical Current

Links

CA000139438A 1911-08-12 1911-08-12 Microphone Expired CA139438A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA139438T 1911-08-12

Publications (1)

Publication Number Publication Date
CA139438A true CA139438A (fr) 1912-04-02

Family

ID=45259154

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000139438A Expired CA139438A (fr) 1911-08-12 1911-08-12 Microphone

Country Status (1)

Country Link
CA (1) CA139438A (fr)

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