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AU112995B2 - Improvements in and relating to directional soundwave apparatus - Google Patents

Improvements in and relating to directional soundwave apparatus

Info

Publication number
AU112995B2
AU112995B2 AU3272/40A AU327240A AU112995B2 AU 112995 B2 AU112995 B2 AU 112995B2 AU 3272/40 A AU3272/40 A AU 3272/40A AU 327240 A AU327240 A AU 327240A AU 112995 B2 AU112995 B2 AU 112995B2
Authority
AU
Australia
Prior art keywords
soundwave
directional
relating
soundwave apparatus
directional soundwave
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
AU3272/40A
Inventor
Donald Ore Sproule Arthur Joseph Hughes
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.)
Individual
Original Assignee
Individual
Filing date
Publication of AU112995B2 publication Critical patent/AU112995B2/en
Application filed by Individual filed Critical Individual
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

AU3272/40A 1940-09-04 Improvements in and relating to directional soundwave apparatus Expired - Lifetime AU112995B2 (en)

Publications (1)

Publication Number Publication Date
AU112995B2 true AU112995B2 (en)

Family

ID=

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