Photography and optical equipment – Ophthalmic article – Element or attachment
Patent
1999-12-22
2000-08-22
Barkai, Rafael
Photography and optical equipment
Ophthalmic article
Element or attachment
1606
Patent
active
D04297563
REFERENCES:
patent: D291894 (1987-09-01), Weisenfeld et al.
patent: D368272 (1996-03-01), Starr et al.
patent: D371154 (1996-06-01), Kalbach
patent: 1819738 (1931-08-01), Daniels
patent: 5905560 (1999-05-01), Daniel
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