US PATENT SUBCLASS 128 / 203.29
.~.~ Including face mask covering nose and mouth


Current as of: June, 1999
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128 /   HD   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.