Robert H. Powers

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Cassette-like device for advancing and withdrawing a predetermin

Winding – tensioning – or guiding – Coil holder or support – Spool or core
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Device for preventing fogging of film within a camera back

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Diffusion transfer camera processor

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Full range platemaker optical system

Photocopying – Projection printing and copying cameras – Reflector between original and photo-sensitive paper
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Profile ID: LFUS-PAI-P-1366560

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