Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1983-09-09
1985-04-23
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D 9341, D 9425
Patent
active
D02785390
REFERENCES:
patent: D218152 (1970-07-01), Emerson
patent: D218806 (1970-09-01), Berg
patent: D238658 (1976-02-01), Stone
patent: D239156 (1976-03-01), McDonough
patent: D241622 (1976-09-01), Smith
patent: D246854 (1978-01-01), Baker
patent: D248277 (1978-06-01), Hartman
patent: D272251 (1984-01-01), Yoshihama
patent: 3021001 (1962-02-01), Donofrio
patent: 3896279 (1975-07-01), Sugawara
patent: 3999654 (1976-12-01), Pollack
Josephson Paul J.
Lykins Larry W.
Holtje Nelson C.
International Business Machines - Corporation
Sirr Francis A.
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