Photography and optical equipment – Ophthalmic article
Patent
1990-03-09
1992-07-07
Ansher, Bernard
Photography and optical equipment
Ophthalmic article
Patent
active
D03277160
REFERENCES:
patent: 1374287 (1921-04-01), Dunkelsberg
patent: 1887871 (1932-11-01), Craig
patent: 2060727 (1936-11-01), Diodati
patent: 2255197 (1941-09-01), Thomas
Accessories Oct. 1988 p. 33 top of page.
Accessories Nov. 1988 p. 2 #1.
Ansher Bernard
Barkai R.
Bausch & Lomb Incorporated
Norton John S.
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