Photography and optical equipment – Ophthalmic article
Patent
1990-05-14
1992-04-14
Ansher, Bernard
Photography and optical equipment
Ophthalmic article
Patent
active
D03253910
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Herrington Co. catalog, pp. 48 and 51, .COPYRGT.1988.
Cantor Michael A.
Desy Raoul O.
Ansher Bernard
Barkai R.
Cabot Safety Corporation
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