ES340448A1 - Improvements introduced in the systems of cinematographic projection. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements introduced in the systems of cinematographic projection. (Machine-translation by Google Translate, not legally binding)
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Improvements introduced in cinematographic projection systems characterized by placing the cinematographic projector, not in front but behind the screen. (Machine-translation by Google Translate, not legally binding)
ES0340448A1967-05-111967-05-11Improvements introduced in the systems of cinematographic projection. (Machine-translation by Google Translate, not legally binding)
ExpiredES340448A1
(en)