AU130741B2
(en )
1946-06-05
Improvements in or relating to electrical sound reproducing and/or recording devices
AU337546A
(en )
1946-06-05
Improvements in or relating to electrical sound reproducing and/or recording devices
AU134032B2
(en )
1946-10-31
Improvements in or relating to sound recording and reproduction
AU138702B2
(en )
1947-06-12
Improvements in or relating to sound recording and reproducing devices
AU684846A
(en )
1946-10-31
Improvements in or relating to sound recording and reproduction
AU1217347A
(en )
1947-06-12
Improvements in or relating to sound recording and reproducing devices
AU132695B2
(en )
1946-01-10
Improvements in or relating to magnetic recording and reproducing apparatus
AU139887B2
(en )
1948-11-11
Improvements in and relating to sound recording and reproducing apparatus
AU13346A
(en )
1946-01-10
Improvements in or relating to magnetic recording and reproducing apparatus
CA438183A
(en )
1946-11-26
Vibration recording and reproduction
AU139523B2
(en )
Improvements in or relating to sound recording
AU1630847A
(en )
1948-11-11
Improvements in and relating to sound recording and reproducing apparatus
AU138222B2
(en )
1948-05-27
Improvements in or relating to electrical sound recording or reproducing heads orthe like
AU125860B2
(en )
Improvements in or relating to devices for reproducing and sound from a film
AU138003B2
(en )
1947-04-17
Improvements in or relating to phonograph recorders
AU1341847A
(en )
1948-05-27
Improvements in or relating to electrical sound recording or reproducing heads orthe like
AU142265B2
(en )
1947-12-04
Improvements in or relating to magnetic recording
AU129071B2
(en )
1945-11-10
Improvements in or relating to electrical recorders and reproducers
AU138666B2
(en )
1947-05-15
Improvements in or relating to phonographs
AU138667B2
(en )
1947-05-15
Improvements in or relating to phonographs
AU136598B2
(en )
1947-07-03
Improvements in or relating to phonographs
AU138929B2
(en )
1948-03-11
Improvements in and relating to sound recording or/and reproducing machines
AU140327B2
(en )
1947-06-05
Improvements in or relating to phonograph pickups
AU145858B2
(en )
1948-04-29
Improvements in relating to phonographic transcriber
CA437836A
(en )
1946-11-05
Sound reproducing unit