ES119316A1 - Improvements in microphones. - Google Patents

Improvements in microphones.

Info

Publication number
ES119316A1
ES119316A1 ES119316A ES119316A ES119316A1 ES 119316 A1 ES119316 A1 ES 119316A1 ES 119316 A ES119316 A ES 119316A ES 119316 A ES119316 A ES 119316A ES 119316 A1 ES119316 A1 ES 119316A1
Authority
ES
Spain
Prior art keywords
microphones
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
ES119316A
Other languages
Spanish (es)
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.)
Alfred Graham & Co Ltd
Original Assignee
Alfred Graham & Co Ltd
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 Alfred Graham & Co Ltd filed Critical Alfred Graham & Co Ltd
Priority to ES119316A priority Critical patent/ES119316A1/en
Publication of ES119316A1 publication Critical patent/ES119316A1/en
Expired legal-status Critical Current

Links

ES119316A 1930-08-06 1930-08-06 Improvements in microphones. Expired ES119316A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES119316A ES119316A1 (en) 1930-08-06 1930-08-06 Improvements in microphones.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES119316A ES119316A1 (en) 1930-08-06 1930-08-06 Improvements in microphones.

Publications (1)

Publication Number Publication Date
ES119316A1 true ES119316A1 (en) 1930-09-16

Family

ID=65579030

Family Applications (1)

Application Number Title Priority Date Filing Date
ES119316A Expired ES119316A1 (en) 1930-08-06 1930-08-06 Improvements in microphones.

Country Status (1)

Country Link
ES (1) ES119316A1 (en)

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