Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1980-09-11
1982-08-17
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D14110, D1603
Patent
active
D02658305
REFERENCES:
patent: D209409 (1967-11-01), Britt
patent: D233937 (1974-12-01), Hutcheson
patent: D244280 (1977-05-01), Cross
patent: D245166 (1977-07-01), Bevilacqua
patent: D248400 (1978-07-01), Alderson
patent: D251789 (1979-05-01), Hoyt
patent: D260258 (1981-08-01), Loos
patent: D261522 (1981-10-01), Snellman
patent: 4299382 (1981-11-01), Ichikawa
Holtje Nelson C.
Ricoh & Company, Ltd.
Shoup Guy W.
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