US PATENT SUBCLASS 128 / 203.23
.~.~ Pocket-type draw tube having discharge aperture for air/treating agent mixture at end thereof

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}
203.23.~.~ Pocket-type draw tube having discharge aperture for air/treating agent mixture at end thereof {1}
203.24  DF  .~.~.~> With gas flow control means other than pivotal or removable closure

DEFINITION

Classification: 128/203.23

Pocket-type draw tube having discharge aperture for air/treating agent mixture at end thereof:

(under subclass 203.12) Subject matter comprising a tube having a discharge aperture for a mixture of air and treating agent at one end thereof, the tube being of such size that it can be conveniently carried in a pocket of a garment and air being sucked through the tube by the user.