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Priority to ES122946UpriorityCriticalpatent/ES122946Y/en
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Cinematographic device for projection that essentially is characterized by being constituted by a conventional projector located very close to a screen in which there is a hole facing the projector in order that the beam of rays emitted by is passing through it until it incurs on a curved mirror convex located on the same axis in the opposite part of the screen that deflects the beam of rays towards the face of it in which it is located or is the opposite to that occupied by the projector. (Machine-translation by Google Translate, not legally binding)
ES122946U1966-06-281966-06-28
CINEMATOGRAPHIC DEVICE FOR PROJECTION.
ExpiredES122946Y
(en)
Improvements in the construction of fixed view projectors for opaque and transparent bodies (Machine-translation by Google Translate, not legally binding)