US PATENT SUBCLASS 285 / 40
.~ Thread-cutting means

Current as of: June, 1999
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285 /   HD   PIPE JOINTS OR COUPLINGS

18  DF  WITH ASSEMBLY MEANS OR FEATURE {13}
40.~ Thread-cutting means

DEFINITION

Classification: 285/40

(under subclass 18) Subject matter including means to form a thread upon assembly of one member into another by relative longitudinal movement.