Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-03-24
1982-05-11
Sebastian, Leland A.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02643464
REFERENCES:
patent: 3100567 (1963-08-01), Levy
patent: 3994008 (1976-11-01), Land et al.
patent: 4122470 (1978-10-01), Loranger et al.
Sebastian Leland A.
Shapiro Allan M.
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