Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-03-17
1983-09-20
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 3, D16 2, D1601
Patent
active
D02706431
REFERENCES:
patent: D228680 (1973-10-01), Conner
patent: D244089 (1977-04-01), Augustin
patent: 3017804 (1962-01-01), Bonisch
patent: 3440941 (1969-04-01), Linder
patent: 3958257 (1976-05-01), Johnson
patent: 4157216 (1979-06-01), Plummer
patent: 4323304 (1982-04-01), Ishii
Alie Enrique
Bishop Donald R.
Ryan James M.
Caufield Francis J.
Holtje Nelson C.
Polaroid Corporation
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