Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-04-03
1983-11-01
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02712105
REFERENCES:
patent: D234976 (1975-04-01), Tiffen
patent: D244527 (1977-05-01), Asaki
patent: D247439 (1978-03-01), Asaki
patent: D255457 (1980-06-01), Conner
patent: D261523 (1981-10-01), Conner
patent: 2688071 (1954-08-01), Wright
patent: 3943532 (1976-03-01), Filippis
Sunpak Brochure Entitled "Sunpak Creators of Light for Creative Photography".
Holtje Nelson C.
Vivitar Corporation
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