Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1979-05-14
1981-01-20
Kemper, Catherine E.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02579863
REFERENCES:
patent: D204327 (1966-04-01), Anderson et al.
patent: 3624824 (1971-11-01), Herrmann
patent: 3918882 (1975-11-01), Van Der Laan
Marecek Paul M.
Shaffer John W.
Fraley Lawrence R.
GTE Products Corporation
Kemper Catherine E.
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