Earplug insert for dual mode operation

Details Earplug insert for dual mode operation Earplug insert for dual mode operation

2009-05-21

2010-06-22

Albert, Elizabeth A (Department: 2913)

Medical and laboratory equipment

Prophylactic article

Ear plug or nose clip

Design Patent

active

D0618333

CLAIM:
The ornamental design for an earplug insert for dual mode operation, as shown and described.

REFERENCES:
patent: 2246737 (1941-06-01), Knudsen
patent: 4048996 (1977-09-01), Mittleman et al.
patent: D325082 (1992-03-01), Lambert
patent: D330761 (1992-11-01), Falco
patent: D355030 (1995-01-01), Baldwin
patent: D414260 (1999-09-01), Conner
patent: D430673 (2000-09-01), Lindekugel

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