Casing for portable viewer

Details Casing for portable viewer Casing for portable viewer

1984-06-08

1987-02-17

Zarfas, Louis S.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D 3 33, D 3 76

Patent

active

D02883325

REFERENCES:
patent: D20286 (1965-11-01), Hansen
patent: D232597 (1974-08-01), Sias
patent: D250266 (1978-11-01), Overman
patent: D259975 (1981-07-01), La Barbera
patent: D266682 (1982-10-01), Airlie
patent: 4164309 (1979-08-01), Staats
patent: 4170408 (1979-10-01), Behr
patent: 4213679 (1980-07-01), Sakamoto et al.

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