Earpiece
United States Patent 2593892
US Patent References:
/0350393.html
- - 0350393

/0387709.html
- - 0387709

/0882700.html
- - 0882700

/1223545.html
- - 1223545

Ear cushion
- - 1584662


Inventors:
Kindel, Elmore A.
Publication Date:
04/22/1952
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Assignee:
Kindel, Elmore A.
Primary Class:
181/129
Other Classes:
2/428, 2/174, 2/68, 381/376, 381/372, 381/189, 2/209, 128/866
International Classes:
A42B3/16; A42B3/30; A61F11/14; A42B3/04; A61F11/00
US Patent References:
1599898Bathing cap
1621629Goggles
1857974Ear protector
1973330Ear screen or guard
2345842Noise eliminator
2407731Receiver ear piece
2447470Noise insulating ring for earphones
2468721Earphone socket and noise shield
2488235Diving mask with pressure equalizing ear cups