FR1060885A
(en )
1954-04-07
Method and devices for reproducing and recording images
CH317943A
(en )
1956-12-15
Pneumatic tape drive device
FR986149A
(en )
1951-07-27
Method and device for magnetic recording on discs and for magnetic reproduction of such discs
FR981663A
(en )
1951-05-29
Method and devices for sound recording on tape and in particular on cinematographic films
CH292122A
(en )
1953-07-31
Magnetic sound recording and reproduction device.
FR1078430A
(en )
1954-11-18
Magnetic recording method and apparatus
FR979361A
(en )
1951-04-25
Magnetic process for recording sound and speaking on cinematographic film
AT174484B
(en )
1953-04-10
Cassette for magnetic sound text carriers in the form of an endless tape roll
FR1112823A
(en )
1956-03-19
Improvements in the production methods of recording and reading devices with several magnetic heads
FR1013577A
(en )
1952-07-30
Method and device for recording sound oscillations on films
FR1144573A
(en )
1957-10-15
Magnetic tape recording machine
FR1038053A
(en )
1953-09-24
Method and apparatus for recording sound on film
FR929283A
(en )
1947-12-22
Method and device for sound recording on film
FR1055220A
(en )
1954-02-17
Method and device for synchronizing the progress of a cinematographic film and that of a sound recording on magnetic tape
FR1045834A
(en )
1953-12-01
Magnetic tape recording device
FR1005796A
(en )
1952-04-15
Method and device for recording and reproducing sound films
AT167807B
(en )
1951-03-10
Winding and unwinding device for sound recording and reproducing devices with tape-shaped sound writing carriers
FR1060784A
(en )
1954-04-06
Method and device for making the writing face of the original sound recording tapes conductive
FR1006683A
(en )
1952-04-25
Magnetic tape recording process and equipment for carrying out the process
FR1055851A
(en )
1954-02-23
Method and device for the production of endless sound recording tapes
FR1011872A
(en )
1952-07-01
Improvements in cinematographic film recording processes
FR1007289A
(en )
1952-05-05
Method and device for recording and reproducing sounds
FR1006229A
(en )
1952-04-21
Device for recording and reproducing sound by the magnetic process
FR1013239A
(en )
1952-07-24
Device for driving films or tapes for recording or playing back sound
FR984520A
(en )
1951-07-06
Sound player for the faithful reproduction of sound recordings on films in general and films with reduced sound tracks in particular