US PATENT SUBCLASS 89 / 19
.~ Screw

Current as of: June, 1999
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89 /   HD   ORDNANCE

17  DF  BREECH CLOSURES {4}
19.~ Screw {1}
20.2  DF  .~.~> Interrupted {2}

DEFINITION

Classification: 89/19

Breech-blocks adapted to be screwed into the breech.