US PATENT SUBCLASS 128 / 204.29
.~.~ Control means responsive to variation in ambient pressure

Current as of: June, 1999
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128 /   HD   SURGERY

200.24  DF  RESPIRATORY METHOD OR DEVICE {32}
204.18  DF  .~ Means for supplying respiratory gas under positive pressure {17}
204.29.~.~ Control means responsive to variation in ambient pressure

DEFINITION

Classification: 128/204.29

Control means responsive to variation in ambient pressure:

(under subclass 204.18) Subject matter including control means responsive to a variation in the ambient pressure.