AU139887B2 - Improvements in and relating to sound recording and reproducing apparatus - Google Patents

Improvements in and relating to sound recording and reproducing apparatus

Info

Publication number
AU139887B2
AU139887B2 AU16308/47A AU1630847A AU139887B2 AU 139887 B2 AU139887 B2 AU 139887B2 AU 16308/47 A AU16308/47 A AU 16308/47A AU 1630847 A AU1630847 A AU 1630847A AU 139887 B2 AU139887 B2 AU 139887B2
Authority
AU
Australia
Prior art keywords
relating
reproducing apparatus
sound recording
sound
recording
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
AU16308/47A
Other versions
AU1630847A (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.)
Geoffrey Allison Scott Callum
Original Assignee
Geoffrey Allison Scott Callum
Filing date
Publication date
Application filed by Geoffrey Allison Scott Callum filed Critical Geoffrey Allison Scott Callum
Application granted granted Critical
Publication of AU139887B2 publication Critical patent/AU139887B2/en
Publication of AU1630847A publication Critical patent/AU1630847A/en
Expired legal-status Critical Current

Links

AU16308/47A 1947-11-11 Improvements in and relating to sound recording and reproducing apparatus Expired AU139887B2 (en)

Publications (2)

Publication Number Publication Date
AU139887B2 true AU139887B2 (en) 1948-11-11
AU1630847A AU1630847A (en) 1948-11-11

Family

ID=

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