Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1981-04-06
1983-09-06
Holtje, Nelson C.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02704528
REFERENCES:
patent: D261147 (1981-10-01), Lawrence
patent: D261148 (1981-10-01), Lawrence
patent: D264727 (1982-06-01), Matsuzaka
patent: D265656 (1982-08-01), Matsushima
Canon Kabushiki Kaisha
Holtje Nelson C.
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