Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-09-07
1978-02-21
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02472961
REFERENCES:
patent: D222298 (1971-10-01), Ishii
patent: D228957 (1973-10-01), Ishii
patent: D231127 (1974-04-01), Case et al.
patent: D231129 (1974-04-01), Case et al.
patent: D236915 (1975-09-01), Hideshima
patent: D243522 (1977-03-01), Nakade
Burke Wallace R.
Kemper Catherine E.
McGlew John J.
Ricoh Co. Ltd.
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