Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1978-04-25
1981-01-13
Kemper, Catherine E.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D16 06, D1601
Patent
active
D02578492
REFERENCES:
patent: D233171 (1974-10-01), Land et al.
patent: 3967302 (1976-06-01), Cote et al.
patent: 4156567 (1979-05-01), Ostrowski
Conner James M.
Finelli Patrick L.
Ostrowski John C.
Ryan James M.
Slavitter Frederick
Kelleher John J.
Kemper Catherine E.
Polaroid Corporation
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