Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1979-01-29
1981-03-03
Kemper, Catherine E.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1601
Patent
active
D02584450
REFERENCES:
patent: 4041507 (1977-08-01), Ko
Ooya Tetsuro
Yamashita Maki
Gross Meyer A.
Kemper Catherine E.
Minolta Camera Kabushiki Kaisha
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