Eyeglass floatation collar

Details Eyeglass floatation collar Eyeglass floatation collar

1990-11-20

1993-12-07

Ansher, Bernard

Photography and optical equipment

Optical article not elsewhere specified

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Patent

active

D03420817

REFERENCES:
patent: D159301 (1950-07-01), Stegeman
patent: 3016796 (1962-01-01), Boothe
patent: 3038375 (1962-06-01), Gansz
patent: 3390938 (1968-07-01), Gansz
patent: 3711190 (1973-01-01), Blair
patent: 4729650 (1988-03-01), Jennings
patent: 4877320 (1989-10-01), Holden
patent: 4966451 (1990-10-01), Corral
patent: 5054903 (1991-10-01), Jannard
patent: 5087118 (1992-02-01), Gill

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