Film viewer

Photography and optical equipment – Projector or viewer – Integrated unit

Patent

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Details

D16225, 1602

Patent

active

D03870812

REFERENCES:
patent: D199598 (1964-11-01), Lanigan
patent: D268589 (1983-04-01), Miller
patent: D276618 (1984-12-01), Hanke
patent: D337599 (1993-07-01), Miyahara
Hong Kong Enterprise, Nov. 1985 p. 70 (Slide Viewer).

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