Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-01-07
1977-11-08
Largen, James R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1602
Patent
active
D02463148
REFERENCES:
patent: D203714 (1966-02-01), Radtke
patent: D215969 (1969-11-01), Anderson
patent: D219554 (1970-12-01), Prazsky
patent: 3953120 (1976-04-01), Badalich et al.
Erber Dennis J.
Kubnick Norman R.
Bell & Howell Company
Fitz-Gerald Roger M.
Kemper Catherine
Largen James R.
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