Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1985-09-13
1988-04-26
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 5
Patent
active
D02954206
REFERENCES:
patent: D213806 (1969-04-01), Ikegami
patent: D271881 (1983-12-01), Kato
patent: D289176 (1987-04-01), Yoshida
patent: 4171894 (1979-10-01), Yamada
Modern Photography--10/84--p. 77--Camera at center-right.
Holtje Nelson C.
Ricoh & Company, Ltd.
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