US PATENT SUBCLASS 128 / 203.29
.~.~ Including face mask covering nose and mouth
Current as of:
June, 1999
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128 /
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SURGERY
200.24
DF
RESPIRATORY METHOD OR DEVICE
{32}
203.12
DF
.~ Means for mixing treating agent with respiratory gas {16}
203.29
.~.~ Including face mask covering nose and mouth
DEFINITION
Classification: 128/203.29
Including face mask covering nose and mouth:
(under subclass 203.12) Subject matter including a face mask covering the nose and mouth.
(1) Note. See subclass 205.25 for the definition of a face mask.