AU152528B2
(en )
1950-04-20
Improvements in or relating to sound recording and reproducing apparatus
AU3249850A
(en )
1950-04-20
Improvements in or relating to sound recording and reproducing apparatus
AU149254B2
(en )
1950-11-02
Improvements in or relating to magnetic sound recording or reproducing apparatus
AU3658150A
(en )
1950-11-02
Improvements in or relating to magnetic sound recording or reproducing apparatus
AU139887B2
(en )
1948-11-11
Improvements in and relating to sound recording and reproducing apparatus
AU153947B2
(en )
1952-04-24
Improvements in and relating to sound reproducing apparatus
AU152537B2
(en )
1950-09-07
Improvements in or relating to magnetic recording and reproducing devices
AU155762B2
(en )
1953-07-16
Improvements in or relating to sound recording or reproducing apparatus
AU1630847A
(en )
1948-11-11
Improvements in and relating to sound recording and reproducing apparatus
AU798752A
(en )
1952-04-24
Improvements in and relating to sound reproducing apparatus
AU138702B2
(en )
1947-06-12
Improvements in or relating to sound recording and reproducing devices
AU147898B2
(en )
1948-10-14
Improvements relating to sound recording and/or reproducing apparatus
AU3552250A
(en )
1950-09-07
Improvements in or relating to magnetic recording and reproducing devices
AU138929B2
(en )
1948-03-11
Improvements in and relating to sound recording or/and reproducing machines
AU153302B2
(en )
1950-10-12
Improvements in or relating to phonograph record and method for producing same
AU1829653A
(en )
1953-07-16
Improvements in or relating to sound recording or reproducing apparatus
AU148996B2
(en )
Improvements in and relating to sound reproduction cabinets
AU159124B2
(en )
1952-03-20
Improvements in or relating to magnetic sound recording methods and recording heads therefor
AU1217347A
(en )
1947-06-12
Improvements in or relating to sound recording and reproducing devices
AU2303048A
(en )
1948-10-14
Improvements relating to sound recording and/or reproducing apparatus
AU167119B2
(en )
1953-09-17
Improvements in and relating to sound reproducing apparatus
AU165307B2
(en )
1953-12-03
Improvements in or relating to sound recording and reproduction
AU148011B2
(en )
1950-07-13
Improvements relating to recording and like apparatus
AU1822748A
(en )
1948-03-11
Improvements in and relating to sound recording or/and reproducing machines
AU3621850A
(en )
1950-10-12
Improvements in or relating to phonograph record and method for producing same