Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1982-05-28
1984-10-30
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
Patent
active
D02761661
REFERENCES:
patent: D219312 (1970-11-01), Lamb
patent: D234821 (1975-04-01), Sakamoto
patent: D264345 (1982-05-01), Masaki
patent: D265656 (1982-08-01), Matsushima
patent: D270164 (1983-08-01), Sawada
Canon Kabushiki Kaisha
Holtje Nelson C.
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