CH267150A
(en )
1950-03-15
Method and device for magnetic sound recording and reproduction on or from disc-shaped sound carriers.
CH292122A
(en )
1953-07-31
Magnetic sound recording and reproduction device.
AT168570B
(en )
1951-06-25
Apparatus for magnetic sound recording and reproduction
CH272869A
(en )
1951-01-15
Device for sound reproduction.
AT169533B
(en )
1951-11-26
Method and device for recording and reproducing magnetic sound recordings
AT175073B
(en )
1953-06-10
Method and device for recording and reproducing magnetophonic texts
CH286170A
(en )
1952-10-15
Apparatus for recording or reproducing sound.
FR1055028A
(en )
1954-02-16
Small magnetic sound recording device
AU148003B2
(en )
1949-06-23
Methods and apparatus for duplicating magnetic recordings
FR1050390A
(en )
1954-01-07
Sound recording and reproducing apparatus
DE1633743U
(en )
1952-01-24
DEVICE FOR MAGNETIC SOUND RECORDING AND PLAYBACK.
AU2764049A
(en )
1949-06-23
Methods and apparatus for duplicating magnetic recordings
FR1000717A
(en )
1952-02-15
Improvements to sound recording and reproduction machines
AU147902B2
(en )
1949-05-19
Improvements in apparatus forthe magnetic recording and reproducing of sound by means ofa travelling tape or wire
DK77396C
(en )
1954-04-12
Device for magnetic sound recording and reproducing apparatus.
FR991835A
(en )
1951-10-10
Improvements in the recording and reproduction of sound by magnetic means
AU2704749A
(en )
1949-05-19
Improvements in apparatus forthe magnetic recording and reproducing of sound by means ofa travelling tape or wire
AT194154B
(en )
1957-12-27
Magnetic sound recording and reproducing device
AT173870B
(en )
1953-02-10
Apparatus for sound recording or retrieval with tape or wire-shaped sound writing carriers
DK86119C
(en )
1958-08-25
Magnetic sound recording and reproducing apparatus.
CH289208A
(en )
1953-02-28
Magnetic sound recording and reproducing device.
CA460767A
(en )
1949-11-01
Method and apparatus for reproduction of angular magnetic recording
FR1028845A
(en )
1953-05-28
Magnetic sound recording and reproduction method
FR1039206A
(en )
1953-10-06
Advanced electromagnetic sound recording and reproduction device
FR1006962A
(en )
1952-04-29
Further development of magnetic sound recording and reproduction heads