US PATENT SUBCLASS 285 / 133.21
.~.~ Having a seal, gasket, O-ring, or packing


Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

125.1  DF  FOR BRANCHED PATH {8}
133.11  DF  .~ T-type {5}
133.21.~.~ Having a seal, gasket, O-ring, or packing


DEFINITION

Classification: 285/133.21

Having a seal, gasket, O-ring, or packing:

(under subclass 132.1) Subject matter including a means which prevents or minimizes the flow of a fluid.