FR1051015A
(en )
1954-01-12
Improvements to magnetic recording and reproducing devices
FR1034052A
(en )
1953-07-17
Device for magnetic data recording
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
DK77396C
(en )
1954-04-12
Device for magnetic sound recording and reproducing apparatus.
CH290631A
(en )
1953-05-15
Drive device in sound recording and reproducing devices for perforated magnetic tapes.
FR1046547A
(en )
1953-12-07
Portable magnetic device for sound recording
DK82048C
(en )
1957-02-11
Device by an electromagnetic sound recording and reproducing apparatus.
CH289208A
(en )
1953-02-28
Magnetic sound recording and reproducing device.
AT192647B
(en )
1957-10-25
Drive mechanism for magnetic sound recorders and players
NL179689B
(en )
MAGNETIC RECORDING MEDIA.
CH292852A
(en )
1953-08-31
Device for recording and reproducing sounds.
DE1633743U
(en )
1952-01-24
DEVICE FOR MAGNETIC SOUND RECORDING AND PLAYBACK.
DK86119C
(en )
1958-08-25
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
DK87911C
(en )
1959-09-28
Magnetic sound recording and reproducing apparatus.
FR1146793A
(en )
1957-11-14
Transportable sound recording and reproduction device
FR1050390A
(en )
1954-01-07
Sound recording and reproducing apparatus
AT193628B
(en )
1957-11-25
Smallest sound recording and playback device
DK78669C
(en )
1954-12-27
Apparatus for magnetic sound recording and reproduction.
FR1020696A
(en )
1953-02-09
Improvements to devices for recording and reading sound recordings made by magnetic means
AT168570B
(en )
1951-06-25
Apparatus for magnetic sound recording and reproduction
FR1061712A
(en )
1954-04-14
Device for magnetic reproduction