US PATENT SUBCLASS 33 / 501.19
.~.~ By rotary master

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

501  DF  GAUGE {61}
501.7  DF  .~ Tooth testing (e.g., gear, rack) {6}
501.19.~.~ By rotary master

DEFINITION

Classification: 33/501.19

By rotary master:

(under subclass 501.7) Subject matter wherein the contact member is a standard reference gear that turns about an axis through its center.