DK105927C
(en )
1966-11-28
Sound reproduction system.
NL189735B
(en )
MAGNETIC RECORDING AND / OR DISPLAY DEVICE.
NL189160B
(en )
MAGNETIC RECORDING MEDIA.
FR1111947A
(en )
1956-03-06
Magnetic recording system
DK109056C
(en )
1968-03-11
Magnetic recording and reproducing apparatus.
AT195138B
(en )
1958-01-25
Sound recording and reproducing device
CH334699A
(en )
1958-12-15
Magnetic sound recording and playback device
AT191630B
(en )
1957-09-10
Sound recording and playback device
AT183243B
(en )
1955-09-26
Magnetic recorder
DK87911C
(en )
1959-09-28
Magnetic sound recording and reproducing apparatus.
AT194154B
(en )
1957-12-27
Magnetic sound recording and reproducing device
CH319629A
(en )
1957-02-28
Sound recording and reproducing device
DK86119C
(en )
1958-08-25
Magnetic sound recording and reproducing apparatus.
NL179689B
(en )
MAGNETIC RECORDING MEDIA.
AT192647B
(en )
1957-10-25
Drive mechanism for magnetic sound recorders and players
CH289208A
(en )
1953-02-28
Magnetic sound recording and reproducing device.
CH316940A
(en )
1956-10-31
Magnetic amplifier
GR14842B
(en )
1953-11-25
SOUND RECORDING AND REPRODUCTION DEVICE.
DK88159C
(en )
1959-11-16
Magnetic recording and reproducing apparatus.
NL185041C
(en )
DEVICE FOR RECORDING AND PLAYING BACK OF AUDIO INFORMATION ON, RESPECTIVELY OFF, A MAGNETIC SHEET.
CA495670A
(en )
1953-09-01
Magnetic recording and reproducing apparatus
FR1109824A
(en )
1956-02-02
Magnetic recording and reproducing device
FR1114881A
(en )
1956-04-17
Magnetic recording transducer
FR1081761A
(en )
1954-12-22
Magnetic sound recording and reproduction device
CA496276A
(en )
1953-09-22
Magnetic recording and reproducing