Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1976-05-03
1977-09-13
Lucas, Susan J.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02457814
REFERENCES:
patent: D213595 (1969-03-01), Simon
patent: D228310 (1973-09-01), Shaw
Optometric Weekly July 25, 1974 p. 47 "Safilo" Frames.
Burkhardt Wayne W.
Fischlein Robert R.
American Optical Corporation
Lucas Susan J.
Nealon William C.
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