US PATENT SUBCLASS 24 / 410
.~.~.~ Including symmetrical formations on opposite walls for engaging mating elements

Current as of: June, 1999
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24 /   HD   BUCKLES, BUTTONS, CLASPS, ETC.

381  DF  ZIPPER OR REQUIRED COMPONENT THEREOF {15}
403  DF  .~ Interlocking surface constructed from plural elements in series {7}
409  DF  .~.~ Having interlocking portion with specific shape {2}
410.~.~.~ Including symmetrical formations on opposite walls for engaging mating elements

DEFINITION

Classification: 24/410

Including symmetrical formations on opposite walls for engaging mating elements:

(under subclass 409) Discrete element face including two identically shaped symmetrical formations located on opposite sides of the discrete element for interlocking engagement with identical formations on two different discrete elements of the mating interlocking surface.