Ear plug

Details Ear plug Ear plug

1994-07-21

1996-01-30

Zarfas, Louis S.

Medical and laboratory equipment

Prophylactic article

Ear plug or nose clip

Patent

active

D03666964

REFERENCES:
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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.
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patent: 5195539 (1993-03-01), Dyrud et al.
patent: 5249309 (1993-10-01), Berg et al.
Shell Chemical Company Technical Bulletin SC:1032-88, Kraton Thermoplastic Rubber Medical Products (May 1988).
Provisional Technical Bulletin for Kraton G-2706, GLS Plastics (Aug. 1989).
Santoprene Monsanto Elastomer brochure TPE 74-01 prior art.

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