Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-08-01
1979-04-10
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02515679
REFERENCES:
patent: D229099 (1973-11-01), Quinn
patent: D232773 (1974-09-01), Kato
patent: 3982117 (1976-09-01), Betlejewski
Burke Wallace R.
Kemper Catherine
Sunpak Corporation
Wayne Milton J.
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