Ear plug

Details Ear plug Ear plug

1994-07-21

1996-01-16

Zarfas, Louis S.

Medical and laboratory equipment

Prophylactic article

Ear plug or nose clip

Patent

active

D03663132

REFERENCES:
patent: Re29487 (1977-12-01), Gardner, Jr.
patent: 1344935 (1920-06-01), Baum
patent: 2246736 (1938-08-01), Knudsen
patent: 2437490 (1942-06-01), Watson et al.
patent: 2785675 (1957-03-01), Berkman
patent: 2785676 (1957-03-01), Berkman
patent: 2824558 (1958-02-01), Michael et al.
patent: 2850012 (1958-09-01), Becker
patent: 2876767 (1959-03-01), Wasserman
patent: 2888921 (1959-06-01), Nielson et al.
patent: 3736929 (1973-06-01), Mills
patent: 4060080 (1977-11-01), Akiyama
patent: 4434794 (1984-03-01), Leight
patent: 4540063 (1985-09-01), Ochi et al.
patent: 4582053 (1986-04-01), Wilson
patent: 5080110 (1992-01-01), Weldon et al.
patent: 5195539 (1993-03-01), Dyrud et al.
patent: 5249309 (1993-10-01), Berg et al.
Santoprene Monsanto Elastomers brochure (TPE74-01) prior art.
Shell Chemical Company Technical Bulletin SC:1032-88, KRATON Theromplastic Rubber Medical Products (May 1988).
Provisional Technical Bulletin for KRATON G-2706, GLS Plastics (Aug. 1989).

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