Photography and optical equipment – Ophthalmic article – Element or attachment
Patent
1998-07-27
2000-05-09
Barkai, Raphael
Photography and optical equipment
Ophthalmic article
Element or attachment
D16309, 1606
Patent
active
D04245997
REFERENCES:
patent: D166853 (1952-05-01), Felch
patent: D308587 (1990-06-01), Lund et al.
patent: 2197973 (1940-04-01), Everett et al.
patent: 2519561 (1950-08-01), Gillman et al.
patent: 5151600 (1992-09-01), Black
patent: 5167036 (1992-12-01), Daprato
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