US PATENT SUBCLASS 102 / 493
.~.~ Structurally weakened casing

Current as of: June, 1999
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102 /   HD   AMMUNITION AND EXPLOSIVES

473  DF  SHELLS {13}
491  DF  .~ Shrapnel {3}
493.~.~ Structurally weakened casing

DEFINITION

Classification: 102/493

Structurally weakened casing:

(under subclass 491) Subject matter wherein the shell casing has scores, grooves, etc., to enhance fragmentation.