Title:
Apparatus and process for relieving pain and discomfort
United States Patent 2986140
US Patent References:
Method and apparatus for testing hearing
- - 2217394
Signal interrupting means for audiometers
- - 2310589
Method and apparatus for minimizing pain caused by drilling teeth
- - 2466054
Method of testing hearing
- - 2511482
Combination headrest and earphones
- - 2527656
Method and apparatus for testing hearing
- - 2217394
Signal interrupting means for audiometers
- - 2310589
Method and apparatus for minimizing pain caused by drilling teeth
- - 2466054
Method of testing hearing
- - 2511482
Combination headrest and earphones
- - 2527656
Inventors:
Gardner, Wallace J.
Licklider, Joseph C. R.
Licklider, Joseph C. R.
Publication Date:
05/30/1961
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Export Citation:
Assignee:
BOLT BERANEK & NEWNAN INC
Primary Class:
Other Classes:
331/78
International Classes:
A61C1/08; A61C19/00; A61M21/00
US Patent References: