US PATENT SUBCLASS 128 / 206.24
.~.~ Mask/face sealing structure

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.~.~ Mask/face sealing structure {2}
206.25  DF  .~.~.~> Adhesive
206.26  DF  .~.~.~> Closed air-filled passage adjacent mask edge (e.g., tubular bead, etc.)

DEFINITION

Classification: 128/206.24

Mask/face sealing structure:

(under subclass 206.21) Subject matter including structure for sealing the contact area between a mask and the user's face.

(1) Note. A patent is placed as an original in this subclass only if it claims structural details of the mask/face sealing means, (i.e., a mere nominal recitation of a mask/face sealing means is insufficient to place a patent here).