US2351003A
(en )
1944-06-13
Recording and reproducing of vibrations
US2738383A
(en )
1956-03-13
Method and apparatus for duplicating magnetic recordings and magnetic tape record members
US2594893A
(en )
1952-04-29
Magnetic recording medium
US3470399A
(en )
1969-09-30
Linear motor velocity detection apparatus
US2680785A
(en )
1954-06-08
Sound head mounting
US873084A
(en )
1907-12-10
Telegraphone.
US3046361A
(en )
1962-07-24
Electroacoustic transducer
GB694505A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
1900-01-01
US2750579A
(en )
1956-06-12
Magnetic disc data storage device
GB1287864A
(GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html )
1972-09-06
US3670113A
(en )
1972-06-13
Video transducer head alignment apparatus
US2547737A
(en )
1951-04-03
Universal magnetic head
US5179475A
(en )
1993-01-12
Stray field and DC remanent suppression in high-speed magnetic tape duplicator apparatus having an array of permanent magnets productive of a spatially varying transfer field
US3710039A
(en )
1973-01-09
Methods and apparatus for adjusting tape within a cartridge to minimize differential phase shift in multiple channel tape recording and reproduction
US2942928A
(en )
1960-06-28
Magnetostrictive storage apparatus
GB588178A
(en )
1947-05-15
Improvements in or connected with electro-magnetic pick-up devices for use with stringed musical instruments
US6297631B1
(en )
2001-10-02
Magnetic signal reproducing method and apparatus using magneto-resistive effect element with increased sense current
US3091669A
(en )
1963-05-28
Mounting device for a magnetic transducer head
GB841294A
(en )
1960-07-13
Cutting systems for producing grooved sound tracks
US3218398A
(en )
1965-11-16
Magnetic tape recording
US4301528A
(en )
1981-11-17
Tone arm mechanism
GB697208A
(en )
1953-09-16
Improvements in or relating to transducing heads for magnetic sound recording or reproducing apparatus
US5272573A
(en )
1993-12-21
High-speed magnetic tape duplicator apparatus having an array of permanent magnets productive of a spatially varying transfer field of gradually diminishing strength
US2912517A
(en )
1959-11-10
Magnetic tape apparatus
US20020080533A1
(en )
2002-06-27
Magneto-resistance effect type magnetic head and magnetic signal reproducing apparatus