Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1978-06-26
1980-06-17
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1603
Patent
active
D02554569
REFERENCES:
patent: D246046 (1977-10-01), Hawthorne
Bevilacqua Ernest M.
Hawthorne Allen D.
Noyes Eliot F.
Burke Wallace R.
Cockburn Joscelyn G.
International Business Machines - Corporation
Kemper Catherine
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