Positioning retainer for oro-tracheal tubes
United States Patent 2820457
US Patent References:
/1270565.html
- - 1270565

Oro-tracheal tube positioner and retainer
- - 2693182


Inventors:
Phillips, John W.
Publication Date:
01/21/1958
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Assignee:
Phillips, John W.
Primary Class:
128/200.260
Other Classes:
604/178, 128/DIG.026, 134/168C
International Classes:
A61M16/04