AU1630847A - 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
AU1630847A
AU1630847A AU16308/47A AU1630847A AU1630847A AU 1630847 A AU1630847 A AU 1630847A AU 16308/47 A AU16308/47 A AU 16308/47A AU 1630847 A AU1630847 A AU 1630847A AU 1630847 A AU1630847 A AU 1630847A
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
AU139887B2 (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 AU1630847A publication Critical patent/AU1630847A/en
Publication of AU139887B2 publication Critical patent/AU139887B2/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
AU1630847A true AU1630847A (en) 1948-11-11
AU139887B2 AU139887B2 (en) 1948-11-11

Family

ID=

Similar Documents

Publication Publication Date Title
AU139887B2 (en) Improvements in and relating to sound recording and reproducing apparatus
AU1630847A (en) Improvements in and relating to sound recording and reproducing apparatus
AU138702B2 (en) Improvements in or relating to sound recording and reproducing devices
AU1217347A (en) Improvements in or relating to sound recording and reproducing devices
AU137202B2 (en) Improvements in Portable Sound Recording and Reproducing Machine
AU152528B2 (en) Improvements in or relating to sound recording and reproducing apparatus
AU138222B2 (en) Improvements in or relating to electrical sound recording or reproducing heads orthe like
AU142195B2 (en) Improvements in magnetic recording and reproducing apparatus
AU141750B2 (en) Improvements in magnetic recording and reproducing apparatus
CA443983A (en) Recording and reproducing apparatus
AU137023B2 (en) Improvements in or relating to method and apparatus for recording soundwaves
AU1234847A (en) Improvements in Portable Sound Recording and Reproducing Machine
AU134032B2 (en) Improvements in or relating to sound recording and reproduction
AU3249850A (en) Improvements in or relating to sound recording and reproducing apparatus
AU132695B2 (en) Improvements in or relating to magnetic recording and reproducing apparatus
AU1341847A (en) Improvements in or relating to electrical sound recording or reproducing heads orthe like
AU147898B2 (en) Improvements relating to sound recording and/or reproducing apparatus
AU1453647A (en) Improvements in magnetic recording and reproducing apparatus
AU1446247A (en) Improvements in magnetic recording and reproducing apparatus
AU1394747A (en) Improvements in or relating to method and apparatus for recording soundwaves
AU139523B2 (en) Improvements in or relating to sound recording
AU130741B2 (en) Improvements in or relating to electrical sound reproducing and/or recording devices
AU684846A (en) Improvements in or relating to sound recording and reproduction
AU142902B2 (en) Improvements in magnetic recording reproducing apparatus
AU13346A (en) Improvements in or relating to magnetic recording and reproducing apparatus