Photography and optical equipment – Projector or viewer – With provision for transparency magazine
Patent
1977-10-19
1981-03-24
Lucas, Susan J.
Photography and optical equipment
Projector or viewer
With provision for transparency magazine
D1606
Patent
active
D02586622
REFERENCES:
patent: D10893 (1878-11-01), Bartholdi
patent: D179113 (1956-11-01), Bloch
patent: D204813 (1966-05-01), Carmichael
patent: 2612639 (1952-10-01), Christensen et al.
Optician, Apr. 1, 1966, Adverts XVIII, Sunglasses, Model 813. .
Optician, Mar. 16, 1956, p. XV Sunglasses (Hell).
Burns Robert E.
Lucas Susan J.
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