Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-04-12
1977-12-20
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1601
Patent
active
D02467178
REFERENCES:
patent: D229862 (1974-01-01), Hansen
patent: D236377 (1975-08-01), Takata et al.
patent: D241167 (1976-08-01), Woodring et al.
Burke Wallace R.
Gross Meyer A.
Kemper Catherine
Minolta Camera Kabushiki Kaisha
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