Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-10-07
1979-09-18
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02529556
REFERENCES:
patent: 3951582 (1976-04-01), Holub et al.
patent: 4036578 (1977-07-01), Herman
patent: 4076488 (1978-02-01), Hall, Jr.
Audesse Emery G.
Hartman Donald W.
Burke Wallace R.
Coleman Edward J.
GTE Sylvania Incorporated
Kemper Catherine
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