US PATENT SUBCLASS 33 / 629
.~.~.~.~ Screw thread


Current as of: June, 1999
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33 /   HD   GEOMETRICAL INSTRUMENTS

501  DF  GAUGE {61}
613  DF  .~ Collocating {14}
626  DF  .~.~ Tool or surrogate {4}
628  DF  .~.~.~ Cutter or shaper {9}
629.~.~.~.~ Screw thread


DEFINITION

Classification: 33/629

Screw thread:

(under subclass 628) Subject matter wherein the cutter or shaper forms the spiral of a screw thread.

(1) Note. The threads of this subclass type include, for example, tapered, straight and ACME-type threads.