Title:
Positioning retainer for oro-tracheal tubes
United States Patent 2820457


Inventors:
Phillips, John W.
Application Number:
US48175755A
Publication Date:
01/21/1958
Filing Date:
01/14/1955
Assignee:
Phillips, John W.
Primary Class:
Other Classes:
128/DIG.26, 134/168C, 604/178
International Classes:
A61M16/04
View Patent Images:
US Patent References:
2693182Oro-tracheal tube positioner and retainer1954-11-02
1270565N/A1918-06-25