US PATENT SUBCLASS 89 / 20.2-- .~.~ Interrupted

US PATENT SUBCLASS 89 / 20.2
.~.~ Interrupted

Current as of: June, 1999
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89 /	HD	ORDNANCE

17	DF	BREECH CLOSURES {4}
19	DF	.~ Screw {1}
20.2		.~.~ Interrupted {2}
20.4	DF	.~.~.~> Motor operated
21	DF	.~.~.~> Fixed ammunition

DEFINITION

Classification: 89/20.2

Interrupted:

(under subclass 19) Subject matter having segmental threads mounted to be move in or out of grasping relationship.

SEE OR SEARCH CLASS

109, Safes, Bank Protection, or a Related Device,

72, for other interrupted threads on wall and panel closures.

285, Pipe Joints or Couplings,

34+, for interrupted threads on pipe joints or couplings.

411, Expanded, Threaded, Driven, Headed Tool-Deformed, or Locked-Threaded Fastener, 417+, for screws and bolts provided with circumferentially interrupted threads.