Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-06-24
1978-05-09
Ansher, Bernard
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02478544
REFERENCES:
patent: D190684 (1961-06-01), Kennedy et al.
patent: 3147553 (1964-09-01), Cogswell
patent: 3324300 (1967-06-01), Bouwers
patent: 3603664 (1971-09-01), James
Bressler Peter W.
Simmons Michael
Ansher Bernard
Edmund Scientific Company
Smith, Jr. George A.
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