Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-09-13
1978-10-03
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02497980
REFERENCES:
patent: D190759 (1961-06-01), Schreckengost
patent: D218363 (1970-08-01), Conner et al.
patent: 3140055 (1964-07-01), Long
patent: 3386360 (1968-06-01), Nerwin
patent: 3860812 (1975-01-01), Schneider
patent: 3868182 (1975-02-01), Kidd
patent: 3878385 (1975-04-01), Kingston
Farber Edward R.
Tureck Al
Alter Irwin C.
Burke Wallace R.
Kemper Catherine
Sima Products Corporation
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