Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1984-04-11
1986-08-12
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 1
Patent
active
D02850869
REFERENCES:
patent: D252399 (1979-07-01), Waaske
patent: D257850 (1981-01-01), Matsumoto
patent: D263961 (1982-04-01), Lange
patent: D277867 (1985-03-01), Io
patent: D279573 (1985-07-01), Agou
patent: 4264172 (1981-04-01), Miyagawa
Popular Photography-6/83-p. 73, camera at top left.
Holtje Nelson C.
Kyocera Corporation
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