Earpiece
United States Patent 2934160
US Patent References:
Earpiece with inflatable sealing means
- - 2535258
Ear protecting devices
- - 2785675
Ear-tip for stethoscope type headset
- - 2803308
Earpiece with inflatable sealing means
- - 2535258
Ear protecting devices
- - 2785675
Ear-tip for stethoscope type headset
- - 2803308
Inventors:
Isaac, Touson
Publication Date:
04/26/1960
View Patent Images:
Export Citation:
Assignee:
Isaac, Touson
Primary Class:
Other Classes:
D24/106
International Classes:
A61F11/00
Foreign References:
| GB468604A | ||||
| GB643927A |