Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-11-27
1984-03-13
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D14 77
Patent
active
D02730120
REFERENCES:
patent: D226032 (1973-01-01), Siesholtz
patent: D226453 (1973-03-01), Bundy
patent: 2229721 (1941-01-01), Brandt
patent: 3535442 (1970-10-01), Jennings
patent: 3993866 (1976-11-01), Pearl
patent: 4027329 (1977-05-01), Coutta
patent: 4080629 (1978-03-01), Hammond
patent: 4160999 (1979-07-01), Claggett
Lighting Design & Application-7/81-p. 20-Floodlight at center-left.
Lighting Design & Application-8/76-p. 45, Luminaire at top-left.
Holtje Nelson C.
Vicon Industries, Inc.
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