Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-03-02
1978-12-05
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02504758
REFERENCES:
patent: D233257 (1974-10-01), Holtje
patent: D234370 (1975-02-01), Oberhei m
patent: D239204 (1976-03-01), Holtje et al.
patent: D241538 (1976-09-01), Swayze
patent: D243009 (1977-01-01), Schade
patent: 3969737 (1976-07-01), Kendrick
Burke Wallace R.
Canon Kabushiki
Fitzpatrick Joseph M.
Kemper Catherine
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