US PATENT SUBCLASS 411 / 537
.~ Having leveling means

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

531  DF  WASHER STRUCTURE {11}
537.~ Having leveling means {1}
538  DF  .~.~> Inclined planar face

DEFINITION

Classification: 411/537

Having leveling means:

(under subclass 531) Subject matter wherein the element

includes means for compensating for differences in contour of opposing bearing surfaces on parts in an assembly in which the element is used.