US PATENT SUBCLASS 42 / 78
.~ Rifling

Current as of: June, 1999
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42 /   HD   FIREARMS

76.01  DF  BARRELS {4}
78.~ Rifling

DEFINITION

Classification: 42/78

Gun barrels in which the novelty resides in the rifling. This subclass includes rifling for heavy ordnance as well as for the lighter firearms.