CH320958A
(en )
1957-04-15
Device for recording and / or changing information
CH350326A
(en )
1960-11-30
Device for guiding recording or playback tapes
CH292122A
(en )
1953-07-31
Magnetic sound recording and reproduction device.
AT173870B
(en )
1953-02-10
Apparatus for sound recording or retrieval with tape or wire-shaped sound writing carriers
CH272869A
(en )
1951-01-15
Device for sound reproduction.
AT176376B
(en )
1953-10-10
Apparatus for sound recording and reproduction with tape or wire-shaped sound writing carriers
CH260119A
(en )
1949-02-28
Magnetic sound recording and reproducing head for a tape or wire-shaped sound carrier and method for producing the same.
AT178471B
(en )
1954-05-10
Magnetic recorder for tape or wire-shaped sound carriers
AT174484B
(en )
1953-04-10
Cassette for magnetic sound text carriers in the form of an endless tape roll
CH286170A
(en )
1952-10-15
Apparatus for recording or reproducing sound.
AT168570B
(en )
1951-06-25
Apparatus for magnetic sound recording and reproduction
AT181097B
(en )
1955-02-10
Device with an endless tape or wire-shaped recording medium
AT168370B
(en )
1951-05-25
Device for driving tape or wire-shaped sound writing carriers
AT167807B
(en )
1951-03-10
Winding and unwinding device for sound recording and reproducing devices with tape-shaped sound writing carriers
AT181096B
(en )
1955-02-10
Drive for tape or wire-shaped recording media
AT178470B
(en )
1954-05-10
Drive for tape or wire-shaped sound recording media
AT175711B
(en )
1953-08-10
Player for sound tapes with needle-tone writing
FR1018350A
(en )
1953-01-06
Tape recorder device
CH289208A
(en )
1953-02-28
Magnetic sound recording and reproducing device.
FR1087754A
(en )
1955-02-28
Tape for magnetic recordings
CH278327A
(en )
1951-10-15
Device for recording polarographic derivative curves.
FR1061975A
(en )
1954-04-16
Magnetic recording medium
AU147545B2
(en )
1949-06-23
Improvements ina phonograph record playing apparatus
AT194154B
(en )
1957-12-27
Magnetic sound recording and reproducing device
CH319629A
(en )
1957-02-28
Sound recording and reproducing device