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US2291947A
|
|
Regulation of arc lamps
|
|
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|
|
Method for varying the gradation of lenticulated color films
|
|
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|
|
Projector condenser system
|
|
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Optical system
|
|
DE615313C
|
|
Lighting device with an elongated light source in contact copying machines for screen films
|
|
DE598647C
|
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Process for the production of grooves in embossing rollers for lenticular lenticular films
|
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DE603228C
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Process for producing embossing rollers for lenticular lenticular films
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|
GB394305A
|
|
Improvement in method of forming gofferated film
|
|
US1944230A
|
|
Color filter
|
|
DE606592C
|
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Manufacture of embossing rollers for lenticular films
|
|
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|
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Device for the cutting of threads on cylindrical surfaces
|
|
GB361765A
|
|
Improvements in or relating to combined sound and cinematograph films
|
|
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|
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Reproduction by contact of films with refracting microscopic elements
|
|
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Process for the reproduction of sounds recorded by means of photograms
|
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Process for the obtainment of photographic sound films
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DE631345C
|
|
Lenticular lens film with a smooth longitudinal strip, advantageously located within the row of perforations, for sound recording
|
|
US1904673A
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Printing of films for color cinematography
|
|
DE525791C
|
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Process for the reproduction of linear embossed films used for color cinematography by the contact process
|
|
US1904672A
|
|
Process and device for reproducing goffered films
|
|
US1985398A
|
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Illuminating device for goffered films
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