Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
AU138199B2 - Improvements in or relating to magnetic microphones - Google Patents
[go: Go Back, main page]

AU138199B2 - Improvements in or relating to magnetic microphones - Google Patents

Improvements in or relating to magnetic microphones

Info

Publication number
AU138199B2
AU138199B2 AU14859/47A AU1485947A AU138199B2 AU 138199 B2 AU138199 B2 AU 138199B2 AU 14859/47 A AU14859/47 A AU 14859/47A AU 1485947 A AU1485947 A AU 1485947A AU 138199 B2 AU138199 B2 AU 138199B2
Authority
AU
Australia
Prior art keywords
relating
microphones
magnetic
magnetic 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
AU14859/47A
Other versions
AU1485947A (en
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.)
DAVID JOHN FERRIER
Original Assignee
DAVID JOHN FERRIER
Filing date
Publication date
Application filed by DAVID JOHN FERRIER filed Critical DAVID JOHN FERRIER
Application granted granted Critical
Publication of AU1485947A publication Critical patent/AU1485947A/en
Publication of AU138199B2 publication Critical patent/AU138199B2/en
Expired legal-status Critical Current

Links

AU14859/47A 1947-09-03 Improvements in or relating to magnetic microphones Expired AU138199B2 (en)

Publications (2)

Publication Number Publication Date
AU1485947A AU1485947A (en) 1948-03-25
AU138199B2 true AU138199B2 (en) 1948-03-25

Family

ID=

Similar Documents

Publication Publication Date Title
AU138199B2 (en) Improvements in or relating to magnetic microphones
AU1485947A (en) Improvements in or relating to magnetic microphones
AU139745B2 (en) Improvements in or relating to headphones
AU138666B2 (en) Improvements in or relating to phonographs
AU138667B2 (en) Improvements in or relating to phonographs
AU136598B2 (en) Improvements in or relating to phonographs
AU142265B2 (en) Improvements in or relating to magnetic recording
AU139523B2 (en) Improvements in or relating to sound recording
AU123607B2 (en) Improvements in *or relating to photomnechanical reproduction
AU139092B2 (en) Improvements in or relating to suction-cleaners
AU135911B2 (en) Improvements in or relating to doorlocks
AU137693B2 (en) Improvements in or relating to gyro-verticals
AU135753B2 (en) Improvements in or relating to shoe-trees
AU138375B2 (en) Improvements in or relating to doorlocks
AU140051B2 (en) Improvements in or relating to doorlocks
AU136265B2 (en) Improvements in or relating to keyholders
AU143160B2 (en) Improvements in or relating to electroacoustic devices
AU138148B2 (en) Improvements in or relating to whistles
AU143856B2 (en) Improvements in or relating to electroacoustic transducers
AU1077047A (en) Improvements in or relating to headphones
AU1261647A (en) Improvements in or relating to phonographs
AU1141447A (en) Improvements in or relating to phonographs
AU1141547A (en) Improvements in or relating to phonographs
AU137632B2 (en) Improvements in or relating to electric magnetic devices
AU1622947A (en) Improvements in or relating to magnetic recording