AU114604B2 - Improvements in microphones - Google Patents

Improvements in microphones

Info

Publication number
AU114604B2
AU114604B2 AU249/41A AU24941A AU114604B2 AU 114604 B2 AU114604 B2 AU 114604B2 AU 249/41 A AU249/41 A AU 249/41A AU 24941 A AU24941 A AU 24941A AU 114604 B2 AU114604 B2 AU 114604B2
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 - Lifetime
Application number
AU249/41A
Inventor
Massa Frank
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 of AU114604B2 publication Critical patent/AU114604B2/en
Application filed by Marconis Wireless Telegraph Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU249/41A 1941-01-29 Improvements in microphones Expired - Lifetime AU114604B2 (en)

Publications (1)

Publication Number Publication Date
AU114604B2 true AU114604B2 (en)

Family

ID=

Similar Documents

Publication Publication Date Title
AU114604B2 (en) Improvements in microphones
AU114230B2 (en) Improvements in loudspeakers
AU20541A (en) Improvements in loudspeakers
AU114371B2 (en) Improvements in inking-pads
CA394407A (en) Microphone
AU114295B2 (en) Improvements in microphones
AU114466B2 (en) Improvements in microphones
AU115124B2 (en) Improvements in sparkplugs
AU114836B2 (en) Improvements in sparkplugs
AU114837B2 (en) Improvements in sparkplugs
AU116209B2 (en) Improvements in amplifiers
AU115634B2 (en) Improvements in amplifiers
AU115412B2 (en) Improvements in amplifiers
AU114767B2 (en) Improvements in brassieres
AU113478B2 (en) Improvements in firehose
AU441540A (en) Improvements in microphones
AU412240A (en) Improvements in microphones
CA393975A (en) Guy-anchor
CA398026A (en) Thermohydrometer
CA401662A (en) Pulpstone
CA401536A (en) Luminair
CA401437A (en) Claw-bar
CA395017A (en) Hydroxylated-2-aryl-pseudonaphthazimide
CA397098A (en) K-strophanthine-b
CA400801A (en) Washfountain