Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-04-13
1977-05-31
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1601
Patent
active
D02445255
REFERENCES:
patent: D228808 (1973-10-01), Swayze
patent: D234542 (1975-03-01), Quinn
patent: D236546 (1975-08-01), Shimano et al.
patent: D236851 (1975-09-01), Quinn
patent: D240862 (1976-08-01), Boehm et al.
Burke Wallace R.
Holman John Clarke
Kemper Catherine
Sunpack Corporation
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