US PATENT SUBCLASS 411 / 164
.~.~.~.~.~ Both peripheries


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

81  DF  THREADED FASTENER LOCKED TO A DISCREET STRUCTURE (E.G., PLATE, RAIL, WHEEL) {13}
132  DF  .~ Lock washer-type member located between substructure and bolt head or nut {8}
147  DF  .~.~ Member comprises washer formed as closed loop or apertured plate or as split ring {8}
160  DF  .~.~.~ Closed loop having plural variations in the profile of a contact surface or a peripheral edge thereof {3}
163  DF  .~.~.~.~ Variations are teeth located along a periphery {2}
164.~.~.~.~.~ Both peripheries


DEFINITION

Classification: 411/164

Both peripheries:

(under subclass 163) Device wherein the tooth like projections are at, in or on both the inner periphery and the outer periphery of the figure.