US PATENT SUBCLASS 285 / 300
.~.~ Internal sleeve


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

298  DF  VARIABLE LENGTH {3}
299  DF  .~ With bellows seal {2}
300.~.~ Internal sleeve


DEFINITION

Classification: 285/300

(under subclass 299) Subject matter including a sleeve within the bellows.