Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-08-26
1982-08-17
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1601
Patent
active
D02658291
REFERENCES:
patent: 2865271 (1958-12-01), Klein
patent: 3019715 (1962-02-01), Arnold
Skin Diver Mag.-Dec. 1976-p. 18-U.W. Camera Housing "SLR" at bottom-left.
Modern Photography-2/76-p. 64-U.W. Camera Housing.
Holtje Nelson C.
Ricoh & Company, Ltd.
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