FR986149A
(en )
1951-07-27
Method and device for magnetic recording on discs and for magnetic reproduction of such discs
FR1234831A
(en )
1960-10-19
Transducer device usable for recording, and possibly playing back, stereophonic discs
FR901648A
(en )
1945-08-01
Method and device for recording and reproducing texts, pieces of music and the like
FR1488201A
(en )
1967-07-13
Method and device for the automatic reproduction of recordings on tapes and discs
FR1265219A
(en )
1961-06-30
Apparatus for magnetic recording and reproduction of high frequency signals
FR906189A
(en )
1945-12-26
Method and device for recording sound waves on discs
FR931263A
(en )
1948-02-18
Device for reproducing texts
FR982502A
(en )
1951-06-12
Method and device for the mechanical reproduction of a model curve
FR903298A
(en )
1945-09-28
Stereophonic sound recording device
FR908128A
(en )
1946-04-01
Method and device for recording signals
FR1127285A
(en )
1956-12-12
Method and device for recording sounds, especially orchestral music
FR53086E
(en )
1945-09-07
Method and apparatus for recording sounds and recording thus obtained
FR920997A
(en )
1947-04-23
Method of recording or reproducing vibrations or reproducing recordings of vibrations, and suitable device
FR1285192A
(en )
1962-02-16
Method and apparatus for recording and reproducing discontinuous signals
FR900386A
(en )
1945-06-27
Support (film, disc, roll or other) for recording vibrations, with chip removal, and method for its manufacture
FR61823E
(en )
1955-05-18
Device for reproducing texts
FR980727A
(en )
1951-05-17
Bright tape device for reproducing variations of recorded light intonities
FR1113277A
(en )
1956-03-26
Method and device for recording and reproducing sounds
FR904200A
(en )
1945-10-29
Phonographic recording disc
FR865055A
(en )
1941-05-13
Method and device for the mechanical recording or reproduction of sound
FR1247528A
(en )
1960-12-02
Method for illustrating sound recording by transparent views and device for implementing this method or the like
FR898188A
(en )
1945-04-12
Method of recording images and sounds on narrow film
FR884610A
(en )
1943-08-23
Improvements in methods and apparatus for sound recording
FR883733A
(en )
1943-07-13
Method and apparatus for recording sounds and recording thus obtained
FR1256490A
(en )
1961-03-17
Method and apparatus for reproducing sound signals