Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Floating or underwater type
Patent
1999-04-15
2000-07-25
Mai, Huy
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Floating or underwater type
2429, G02C 100
Patent
active
060928956
ABSTRACT:
A diving face mask including a lens, a main frame and a lens holding frame. The main frame and the holding frame are integrally interlocked together by first projections and second recesses arranged between an outer peripheral surface of the main frame and an outer edge of the holding frame covering this outer peripheral surface.
REFERENCES:
patent: 5603124 (1997-02-01), Garofalo
patent: 5638552 (1997-06-01), Fujima
Fujima Taro
Sato Hiromasa
Mai Huy
Tabata Co. Ltd.
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