Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-04-03
1983-11-08
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02713063
REFERENCES:
patent: D234370 (1975-02-01), Oberheim
patent: D241273 (1976-08-01), Okumo
patent: D263720 (1982-04-01), Takematsu
patent: 4078240 (1978-03-01), Kaneko
patent: 4190880 (1980-02-01), Esaki
patent: 4233648 (1980-11-01), Geissler
patent: 4251854 (1981-02-01), Kaneko
patent: 4276579 (1981-06-01), Yako
Sunpak Brochure Entitled "Sunpak Creators of Light for Creative Photography".
Holtje Nelson C.
Vivitar Corportion
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