US PATENT SUBCLASS 128 / 206.26
.~.~.~ Closed air-filled passage adjacent mask edge (e.g., tubular bead, etc.)

Current as of: June, 1999
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128 /   HD   SURGERY

200.24  DF  RESPIRATORY METHOD OR DEVICE {32}
206.21  DF  .~ Face mask covering a breathing passage {6}
206.24  DF  .~.~ Mask/face sealing structure {2}
206.26.~.~.~ Closed air-filled passage adjacent mask edge (e.g., tubular bead, etc.)

DEFINITION

Classification: 128/206.26

Closed air-filled passage adjacent mask edge (e.g., tubular bead, etc.):

(under subclass 206.24) Subject matter wherein the sealing structure includes a closed air-filled passage adjacent the mask edge.