Photography and optical equipment – Ophthalmic article
Patent
1989-11-02
1992-01-21
Ansher, Bernard
Photography and optical equipment
Ophthalmic article
Patent
active
D03233340
REFERENCES:
patent: D125766 (1941-03-01), Haag
patent: D171852 (1954-03-01), Hoffmaster
patent: D204697 (1966-05-01), Glass et al.
patent: 4429959 (1984-02-01), Walters
patent: 4929075 (1990-05-01), Eliakim
Ansher Bernard
Barkai R.
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