Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-06-23
1979-01-23
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02508931
REFERENCES:
patent: D241538 (1976-09-01), Swayze
patent: 3997775 (1976-12-01), Stoneham
Burke Wallace R.
Kemper Catherine
Sunpak Corporation
Wayne Milton J.
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