Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-09-08
1979-06-26
Burke, Wallace R.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1605
Patent
active
D02522098
REFERENCES:
patent: D247439 (1978-03-01), Asaki
patent: 3943532 (1976-03-01), DeFilippis
Baum Walter J.
Burke Wallace R.
International Telephone and Telegraph Corporation
Kemper Catherine
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