Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-03-11
1978-09-19
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02495295
REFERENCES:
patent: D233700 (1974-11-01), McClare
patent: 3369450 (1968-02-01), Peters
patent: 3547531 (1970-12-01), Wells
patent: 3547534 (1970-12-01), Akiyama et al.
patent: 3759611 (1973-09-01), O'Connell et al.
Adams John W.
Burke Wallace R.
Kemper Catherine
Pako Corporation
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