Forehead engaging swimming snorkel

Details Forehead engaging swimming snorkel Forehead engaging swimming snorkel

1993-08-23

1994-09-06

Chin, Kay H.

Medical and laboratory equipment

Equipment for diagnosis, analysis, or treatment

Article for the introduction, removal or collection of fluids

Patent

active

D03503798

REFERENCES:
patent: 38505 (1863-05-01), Scholfield
patent: 690663 (1902-01-01), Pratt
patent: 3653086 (1972-04-01), Gongkler
patent: 3814090 (1974-06-01), Hill
patent: 4230106 (1980-10-01), Gerslin et al.
patent: 4638410 (1987-01-01), Barker
patent: 4910806 (1990-03-01), Baker et al.
patent: 5020191 (1991-06-01), Uke
patent: 5199421 (1993-04-01), Figgiani et al.

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