US PATENT SUBCLASS 33 / 203.13
.~.~.~ Roller or drum

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

501  DF  GAUGE {61}
203  DF  .~ Wheel {6}
203.12  DF  .~.~ With wheel supporting means {2}
203.13.~.~.~ Roller or drum

DEFINITION

Classification: 33/203.13

(under subclass 203.12) Devices in which the supports are rollers or drums.