Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1978-09-25
1981-04-21
Kemper, Catherine E.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02589648
REFERENCES:
patent: D209872 (1968-01-01), Plantholt et al.
patent: D227600 (1973-07-01), Noyes
patent: D230515 (1974-02-01), Hutcheson et al.
patent: D236378 (1975-08-01), Yahofsky
patent: D240554 (1976-07-01), Cross et al.
Bright Stephen K.
Van Valkinburgh Robert H.
Chapuran Ronald F.
Kemper Catherine E.
Xerox Corporation
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