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AU117935B2 - Improvement in acoustic device - Google Patents

Improvement in acoustic device

Info

Publication number
AU117935B2
AU117935B2 AU7806/42A AU780642A AU117935B2 AU 117935 B2 AU117935 B2 AU 117935B2 AU 7806/42 A AU7806/42 A AU 7806/42A AU 780642 A AU780642 A AU 780642A AU 117935 B2 AU117935 B2 AU 117935B2
Authority
AU
Australia
Prior art keywords
improvement
acoustic device
acoustic
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
AU7806/42A
Other versions
AU780642A (en
Inventor
David Seabert John
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.)
Amalgamated Wireless Australasia Ltd
Original Assignee
Amalgamated Wireless Australasia Ltd
Filing date
Publication date
Application filed by Amalgamated Wireless Australasia Ltd filed Critical Amalgamated Wireless Australasia Ltd
Application granted granted Critical
Publication of AU780642A publication Critical patent/AU780642A/en
Publication of AU117935B2 publication Critical patent/AU117935B2/en
Expired legal-status Critical Current

Links

AU7806/42A 1942-12-24 Improvement in acoustic device Expired AU117935B2 (en)

Publications (2)

Publication Number Publication Date
AU780642A AU780642A (en) 1944-01-13
AU117935B2 true AU117935B2 (en) 1944-01-13

Family

ID=

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