US PATENT SUBCLASS 285 / 11
.~ With relative motion


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

10  DF  LIQUID SEAL {1}
11.~ With relative motion


DEFINITION

Classification: 285/11

(under subclass 10) Subject matter wherein the sealing is between juxtaposed surfaces which are relatively movable.