Hearing protective earplug

Details Hearing protective earplug Hearing protective earplug

1994-05-16

1996-06-25

Zarfas, Louis S.

Medical and laboratory equipment

Prophylactic article

Ear plug or nose clip

Patent

active

D03711935

REFERENCES:
patent: D242743 (1976-12-01), Leight
patent: D253723 (1979-12-01), Leight
patent: D265129 (1982-06-01), Leight
patent: D307325 (1990-04-01), Gardner, Jr.
patent: D307635 (1990-05-01), Gardner, Jr.
patent: D307636 (1990-05-01), Gardner, Jr.
patent: 2573923 (1951-11-01), Mezz
patent: 2670738 (1954-03-01), Gibbons
patent: 2804072 (1957-08-01), Genzer
patent: 3131241 (1964-04-01), Mendelson
patent: 5074375 (1991-12-01), Grozil
Excel.TM. Foam Earplug, Safety Supply America Circular No. 77, (1993).
Airsoft.RTM. Earplug, Global Occupational Safety Catalog, 330SC, p. 70 (1992).
Flexiplug.RTM. Earplug and Reusable Earplugs, Lab Safety Supply, 1993 General Catalog, p. 123.
Whisper.TM. Earplug and Tasco Tri-Fit Earplug, Lab Safety Supply, 1993 General Catalog, p. 124.

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