Photography and optical equipment – Ophthalmic article
Patent
1988-06-28
1990-12-25
Holtje, Nelson C.
Photography and optical equipment
Ophthalmic article
Patent
active
D03132366
REFERENCES:
patent: D182463 (1958-04-01), Gay, Jr. et al.
patent: D211413 (1968-06-01), Mitchell
patent: D281507 (1985-11-01), Schremmer
patent: 4271538 (1981-06-01), Montesi et al.
New Equipment Digest, Sep. 1968, p. 92, "MSA" Visitor Goggles/Copy in Spectacles publication boxes.
Hong Kong Enterprise, Jul. 1988, p. 150, Francini Eyeglasses Numbered 3.fwdarw.5.
Heflin Clare E.
Holtje Nelson C.
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