AU110407B2 - Improvements in or relating to microphones - Google Patents

Improvements in or relating to microphones

Info

Publication number
AU110407B2
AU110407B2 AU4093/39A AU409339A AU110407B2 AU 110407 B2 AU110407 B2 AU 110407B2 AU 4093/39 A AU4093/39 A AU 4093/39A AU 409339 A AU409339 A AU 409339A AU 110407 B2 AU110407 B2 AU 110407B2
Authority
AU
Australia
Prior art keywords
microphones
relating
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
AU4093/39A
Other versions
AU409339A (en
Inventor
Mcmillan Donald
Original Assignee
Mcmillan Donald
Filing date
Publication date
Application filed by Mcmillan Donald filed Critical Mcmillan Donald
Application granted granted Critical
Publication of AU409339A publication Critical patent/AU409339A/en
Publication of AU110407B2 publication Critical patent/AU110407B2/en
Expired legal-status Critical Current

Links

AU4093/39A 1939-09-01 Improvements in or relating to microphones Expired AU110407B2 (en)

Publications (2)

Publication Number Publication Date
AU409339A AU409339A (en) 1940-05-02
AU110407B2 true AU110407B2 (en) 1940-05-02

Family

ID=

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