US PATENT SUBCLASS 33 / 199 R
.~ Screw thread

Current as of: June, 1999
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501  DF  GAUGE {61}
199 R.~ Screw thread {1}
199 B  DF  .~.~> Bench type

Unofficial Alpha Subclasses: R B

DEFINITION

Classification: 33/199

(under subclass 501) Devices designed to determine characteristics of screw thread structure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

143+, for special contact members used with "opposed contact" instruments for taking the diameter of the threaded bar.

501.7+, for gauges having means to determine the lead angle or spur gearing.