Eyeglasses

Details Eyeglasses Eyeglasses

1990-01-30

1991-11-26

Ansher, Bernard

Photography and optical equipment

Ophthalmic article

Patent

active

D03218961

REFERENCES:
patent: D274438 (1984-06-01), Angerman et al.
patent: D308876 (1990-06-01), Piper
patent: 1865691 (1932-07-01), Hill
patent: 2409356 (1946-10-01), Hutchings
patent: 4470673 (1984-09-01), Gilson et al.
patent: 4699479 (1987-10-01), Metcalfe

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