US PATENT SUBCLASS 411 / 522
.~.~.~ Parallel legs, e.g., U-shaped, etc.

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

511  DF  FASTENER SECURING ELEMENT {3}
516  DF  .~ Resilient metallic {3}
520  DF  .~.~ Sheet metal {5}
522.~.~.~ Parallel legs, e.g., U-shaped, etc. {1}
523  DF  .~.~.~.~> Folded leg having fastener aperture or recess {1}

DEFINITION

Classification: 411/522

Parallel legs, e.g., U-shaped, etc.:

(under subclass 520) Subject matter wherein the planar material is folded back thereby at least producing two parallel appendages or legs.