US PATENT SUBCLASS 285 / 121.5
.~.~.~ Having specific bearing structure

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

120.1  DF  HAVING PLURAL INDEPENDENT PATHS {4}
121.1  DF  .~ Allowing relative motion of pipes {3}
121.3  DF  .~.~ Revolvable {2}
121.5.~.~.~ Having specific bearing structure

DEFINITION

Classification: 285/121.5

Having specific bearing structure:

(under subclass 121.3) Subject matter including a means that supports, guides, and reduces friction between a fixed element and a moving element.