Harry L. O. Smith

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Bright screen optical viewer apparatus and method

Patent

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Bright viewing and focusing screens

Patent

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Camera support bracket

Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent

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Film magazine

Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent

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Film magazine pin registration

Patent

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Profile ID: LFUS-PAI-P-370525

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