Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-05-23
1979-01-09
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02507668
REFERENCES:
patent: D234976 (1975-04-01), Tiffen
patent: D241538 (1976-09-01), Swayze
patent: 3919538 (1975-11-01), Yata et al.
patent: 3997775 (1976-12-01), Stoneham
patent: 3999055 (1976-12-01), Wakahara et al.
Burke Wallace R.
Kemper Catherine
Sunpak Corporation
Wayne Milton J.
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