US PATENT SUBCLASS 89 / 17
BREECH CLOSURES

Current as of: June, 1999
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89 /   HD   ORDNANCE

17BREECH CLOSURES {4}
18  DF  .~> Key locked
19  DF  .~> Screw {1}
22  DF  .~> Transverse {3}
26  DF  .~> Gas checks

DEFINITION

Classification: 89/17

The breech-block, its operating mechanism, or the means for securing the block to the breech.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1.1, for manual breech-block operating means for automatic ordnance.

4.05+, for guns with explosion opened breech.

9+, for machine guns.

125+, for automatic or self-loading guns.

SEE OR SEARCH CLASS

42, Firearms, appropriate breech-block subclasses, particularly

16, for manual breech-block operating means for automatic firearms.