AU1899729A - Improvements in or relating to acoustic devices - Google Patents

Improvements in or relating to acoustic devices

Info

Publication number
AU1899729A
AU1899729A AU18997/29A AU1899729A AU1899729A AU 1899729 A AU1899729 A AU 1899729A AU 18997/29 A AU18997/29 A AU 18997/29A AU 1899729 A AU1899729 A AU 1899729A AU 1899729 A AU1899729 A AU 1899729A
Authority
AU
Australia
Prior art keywords
relating
acoustic devices
acoustic
devices
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
AU18997/29A
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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products Inc
Filing date
Publication date
Application filed by Electrical Research Products Inc filed Critical Electrical Research Products Inc
Publication of AU1899729A publication Critical patent/AU1899729A/en
Expired legal-status Critical Current

Links

AU18997/29A 1930-03-19 Improvements in or relating to acoustic devices Expired AU1899729A (en)

Publications (1)

Publication Number Publication Date
AU1899729A true AU1899729A (en) 1930-04-01

Family

ID=

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