US PATENT SUBCLASS 403 / 139
.~.~.~.~ Porous

Current as of: June, 1999
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403 /   HD   JOINTS AND CONNECTIONS

52  DF  ARTICULATED MEMBERS {13}
119  DF  .~ Pivoted {7}
122  DF  .~.~ Universal ball and socket {12}
135  DF  .~.~.~ Including liner, shim, or discrete seat {5}
139.~.~.~.~ Porous

DEFINITION

Classification: 403/139

(under subclass 135) Structure wherein the interposed element is of porous construction.