Earplug

Details Earplug Earplug

1977-05-19

1979-03-13

Recla, Henry J.

Surgery

Truss

Pad

A61F 1102

Patent

active

041436571

ABSTRACT:
A cocoon-shaped earplug is provided with a non-linear longitudinal hole.
Since the hole is not staight the "excessive" sound which would normally injure the labyrinth of the ear can be substantially prevented from entering the ear.

REFERENCES:
patent: 3440314 (1969-04-01), Frisch

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