Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1982-10-29
1984-11-06
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 26
Patent
active
D02762390
REFERENCES:
patent: D175401 (1955-08-01), Gottschalk
patent: 1358110 (1920-11-01), Presicce
patent: 1418033 (1922-05-01), Sutcliffe
patent: 2336508 (1943-12-01), Smith
patent: 2402822 (1946-06-01), Kraft
patent: 2727427 (1955-12-01), Jenkins
patent: 2934601 (1960-04-01), Oppenheimer
patent: 4183644 (1980-01-01), Tureck
patent: 4350419 (1982-09-01), Bowen
patent: 4429947 (1984-02-01), Benton
Castle Linval B.
Holtje Nelson C.
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