AU116420B2 - Improvement in microphones - Google Patents

Improvement in microphones

Info

Publication number
AU116420B2
AU116420B2 AU4176/42A AU417642A AU116420B2 AU 116420 B2 AU116420 B2 AU 116420B2 AU 4176/42 A AU4176/42 A AU 4176/42A AU 417642 A AU417642 A AU 417642A AU 116420 B2 AU116420 B2 AU 116420B2
Authority
AU
Australia
Prior art keywords
microphones
improvement
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
AU4176/42A
Other versions
AU417642A (en
Inventor
Ferdinand Olson Harry
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of AU417642A publication Critical patent/AU417642A/en
Publication of AU116420B2 publication Critical patent/AU116420B2/en
Expired legal-status Critical Current

Links

AU4176/42A 1942-01-13 Improvement in microphones Expired AU116420B2 (en)

Publications (2)

Publication Number Publication Date
AU417642A AU417642A (en) 1943-01-21
AU116420B2 true AU116420B2 (en) 1943-01-21

Family

ID=

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