Title:
Ear inserts
United States Patent 2888921
US Patent References:
Ear-drum protector or ear-stopper
- - 1344935
Ear insert for earphones
- - 2487038
Earpiece with inflatable sealing means
- - 2535258
Method of making ear stoppers
- - 2710427
Ear-drum protector or ear-stopper
- - 1344935
Ear insert for earphones
- - 2487038
Earpiece with inflatable sealing means
- - 2535258
Method of making ear stoppers
- - 2710427
Inventors:
Nielson, Carl A.
Bushey, Theodore J.
Currens, Ransom L.
Bushey, Theodore J.
Currens, Ransom L.
Publication Date:
06/02/1959
View Patent Images:
Export Citation:
Assignee:
Alfred, Schrider
Primary Class:
Other Classes:
D24/106
International Classes:
A61F11/08; A61F11/00
Foreign References:
| GB643927A | ||||
| DE837297C |