US PATENT SUBCLASS 446 / 224
.~ Having check valve

Current as of: June, 1999
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446 /   HD   AMUSEMENT DEVICES: TOYS

220  DF  INFLATABLE {6}
224.~ Having check valve

DEFINITION

Classification: 446/224

Having check valve:

(under subclass 220) Device wherein the enclosure is provided with an opening and means which permits the flow of gas in one direction through the opening, but prevents flow in the opposite direction.

SEE OR SEARCH CLASS

137, Fluid Handling,

223+, for a valve for facilitating the inflation of an inflatable article.