Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-12-01
1980-07-29
Ansher, Bernard
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02561298
REFERENCES:
patent: D240333 (1976-06-01), Chesnut
patent: D241742 (1976-10-01), Steck
patent: 3160698 (1964-12-01), Frey
patent: 4130340 (1978-12-01), Kooi
Edmund, Catalog No. #762, .COPYRGT.1975, p. 125, Zoom Eyepiece, lower left of page.
Ansher Bernard
Oisher Jack
Specwell Corporation
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