Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1975-11-24
1977-03-29
Mercer, Susie J.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02438445
REFERENCES:
patent: D173637 (1954-12-01), Brown
patent: 322461 (1885-07-01), Lord
Optician, Mar. 23, 1973, cover 3 "Chancellor" frame.
Bardin Richard A.
Mercer Susie J.
Ricono Beverly L.
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