US PATENT SUBCLASS 89 / 31
TOMPIONS AND VALVES


Current as of: June, 1999
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89 /   HD   ORDNANCE

31TOMPIONS AND VALVES


DEFINITION

Classification: 89/31

Devices for closing the gun-muzzle or other opening in the barrel.

SEE OR SEARCH CLASS

138, Pipes and Tubular Conduits

89, and indented subclasses and the notes thereto, for closures or plugs for pipes and tubular conduits.

181, Acoustics,

223, for gun silencers, per se.