AT158027B
(en )
1940-02-26
Sound recording camera with a flywheel carried by the film and a spring-loaded film tension roller.
AT160184B
(en )
1941-02-25
Sound film or picture sound film device with a resilient film tensioning roller.
FR746153A
(en )
1933-05-23
Photographic film on reel
SU29350A1
(en )
1933-02-28
The obturator for film projectors
FR796561A
(en )
1936-04-10
Film tensioning device
CH175376A
(en )
1935-02-28
Roll film camera with roller shutter.
CH167529A
(en )
1934-02-28
Atrial free photographic film with lenticular embossing.
AT144721B
(en )
1936-02-25
Small roll film camera.
CH195977A
(en )
1938-02-28
Photographic camera with polarization device.
FR795467A
(en )
1936-03-14
Film drive device
DK47253C
(en )
1933-04-24
Winding roller device.
FR789734A
(en )
1935-11-05
Cinematographic projector
FR780264A
(en )
1935-04-23
Sound film drive device
FR757832A
(en )
1934-01-05
Film drive mechanism
ES134865A1
(en )
1934-08-16
Cinematographic projector.
ES130149A1
(en )
1933-05-16
Improvements in the photographic record of sounds.
ES138715A2
(en )
1935-09-16
IMPROVEMENTS IN THE DEVICES FOR THE PHOTOGRAPHIC SOUND RECORDING.
DK52407C
(en )
1936-12-07
Film clamping device.
FR789780A
(en )
1935-11-06
Battery with only one liquid, regenerable by air
CH175382A
(en )
1935-02-28
Roll stretching system with device for fixing the stretching posts.
DK55681C
(en )
1939-01-09
Tone recording camera with Tone roller equipped with Pressure roller.
ES136413A1
(en )
1935-02-16
Improvements in the projectors.
DK48893C
(en )
1934-06-18
Cinematographic apparatus.
DK48936C
(en )
1934-07-02
Cinematographic apparatus.
AT144719B
(en )
1936-02-25
Device for adjusting the film loops in cinematographic devices.