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Expired
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Frederic De Mare
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Individual
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Individual
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Publication of GB190804829ApublicationCriticalpatent/GB190804829A/en
4829. Mare, F. de. March 25, 1907, [date applied for under Section 91 of Patents &c. Act, 1907]. Optical projection apparatus.-Pictures projected on to a translucent or opaque screen 3 below the level of the stage and seen by reflection in an unsilvered sloping mirror 4 on the stage all in a known manner, are made visible in daylight &c. by the sides &c. of the stage being painted black.
GB190804829D1907-03-251908-03-03Improve Means for Displaying Animated Pictures or the like in a Lighted Hall or in Daylight.
ExpiredGB190804829A
(en)