Overhead projector

Details Overhead projector Overhead projector

1996-03-04

1998-01-06

Hyder, Philip S.

Photography and optical equipment

Projector or viewer

Overhead or opaque type

1602

Patent

active

D03888118

REFERENCES:
patent: D317616 (1991-06-01), Shiiba
patent: D354051 (1995-01-01), Hasegawa
patent: 4696557 (1987-09-01), Tomizuka
patent: 4921343 (1990-05-01), Ushiro et al.
patent: 5345282 (1994-09-01), Ushiro et al.
Gallant Inc. Overhead Projectors Catalog, p. 5 (Model 0-88).
Advertising Brochure for Casio Handheld Overhead Projector Model No. OH-20, Casio Computer Co., Ltd. Tokyo, Japan, Dec., 1995.

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