AU215092B2
(en )
1956-11-08
Improvements in magnetic sound recording 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
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
AU154700B2
(en )
1951-05-10
Improvements relating to magnetic sound recording or reproducing apparatus
AU155762B2
(en )
1953-07-16
Improvements in or relating to sound recording or reproducing apparatus
AU127551A
(en )
1951-05-10
Improvements relating to magnetic sound recording or reproducing apparatus
AU151896B2
(en )
1950-05-18
Improvements in or relating to magnetic recording media
AU1829653A
(en )
1953-07-16
Improvements in or relating to sound recording or reproducing apparatus
AU154325B2
(en )
1951-01-18
Improvements in magnetic recording or reproducing devices
AU152537B2
(en )
1950-09-07
Improvements in or relating to magnetic recording and reproducing devices
AU159124B2
(en )
1952-03-20
Improvements in or relating to magnetic sound recording methods and recording heads therefor
AU3317150A
(en )
1950-05-18
Improvements in or relating to magnetic recording media
AU153974B2
(en )
1951-02-01
Improvements in magnetic recording apparatus
AU3808550A
(en )
1951-01-18
Improvements in magnetic recording or reproducing devices
AU3552250A
(en )
1950-09-07
Improvements in or relating to magnetic recording and reproducing devices
AU740352A
(en )
1952-03-20
Improvements in or relating to magnetic sound recording methods and recording heads therefor
AU151921B2
(en )
1950-07-13
Improvements in or relating to magnetic sound apparatus
AU152221B2
(en )
1950-02-02
Improvements relating to sound recording or reproducing apparatus
AU3834150A
(en )
1951-02-01
Improvements in magnetic recording apparatus
AU149081B2
(en )
1951-03-15
Improvements in or relating to magnetic recording tape
AU3426850A
(en )
1950-07-13
Improvements in or relating to magnetic sound apparatus
AU132695B2
(en )
1946-01-10
Improvements in or relating to magnetic recording and reproducing apparatus
AU142902B2
(en )
1947-09-18
Improvements in magnetic recording reproducing apparatus