Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-06-17
1979-04-17
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02515946
REFERENCES:
patent: D222298 (1971-10-01), Ishii
patent: D239659 (1976-04-01), Katayama et al.
patent: D243522 (1977-03-01), Nakade
patent: D247296 (1978-02-01), Nakade
Aoyama Nobuhisa
Hara Kunio
Burke Wallace R.
Kemper Catherine
Oblon Norman F.
Tokyo Shibaura Electric Co. Ltd.
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