Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-06-16
1984-01-10
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D14114, D1603
Patent
active
D02721562
REFERENCES:
patent: D214959 (1969-08-01), Anderson
patent: D227034 (1973-05-01), Derby
patent: D234005 (1974-12-01), Yagil
patent: D243949 (1977-04-01), Olson
patent: D261646 (1981-11-01), Stirling
patent: D262714 (1982-01-01), Cathey
patent: 3498708 (1970-03-01), Howard
patent: 3674257 (1972-07-01), Neeb
patent: 4085931 (1978-04-01), Szeluga
patent: 4113244 (1978-09-01), Ruenzi
Bryant Andrea P.
Holtje Nelson C.
International Business Machines - Corporation
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