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AU114466B2 - Improvements in microphones - Google Patents

Improvements in microphones

Info

Publication number
AU114466B2
AU114466B2 AU4415/40A AU441540A AU114466B2 AU 114466 B2 AU114466 B2 AU 114466B2 AU 4415/40 A AU4415/40 A AU 4415/40A AU 441540 A AU441540 A AU 441540A AU 114466 B2 AU114466 B2 AU 114466B2
Authority
AU
Australia
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
AU4415/40A
Other versions
AU441540A (en
Inventor
Ferdinand Olson Harry
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Filing date
Publication date
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of AU441540A publication Critical patent/AU441540A/en
Publication of AU114466B2 publication Critical patent/AU114466B2/en
Expired legal-status Critical Current

Links

AU4415/40A 1940-12-28 Improvements in microphones Expired AU114466B2 (en)

Publications (2)

Publication Number Publication Date
AU441540A AU441540A (en) 1942-01-10
AU114466B2 true AU114466B2 (en) 1942-01-10

Family

ID=

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