US PATENT SUBCLASS 128 / 206.21
.~ Face mask covering a breathing passage

Current as of: June, 1999
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128 /   HD   SURGERY

200.24  DF  RESPIRATORY METHOD OR DEVICE {32}
206.21.~ Face mask covering a breathing passage {6}
206.22  DF  .~.~> Means for handling liquid (e.g., saliva, breath condensation, etc.) accumulated in mask
206.23  DF  .~.~> Mask/eyepiece sealing structure
206.24  DF  .~.~> Mask/face sealing structure {2}
206.27  DF  .~.~> Means holding mask readily accessible for use
206.28  DF  .~.~> Covering nose and mouth {3}
207.13  DF  .~.~> Covering nose only

DEFINITION

Classification: 128/206.21

Face mask covering a breathing passage:

(under subclass 200.24) Subject matter including a wall-like structure covering a breathing passage plus a portion of the face.