US PATENT SUBCLASS 33 / 651.1
.~.~.~ Track type

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

501  DF  GAUGE {61}
613  DF  .~ Collocating {14}
651  DF  .~.~ Railway track or railway vehicle part {1}
651.1.~.~.~ Track type

DEFINITION

Classification: 33/651.1

Track type:

(under subclass 651) Subject matter wherein the gauge is used for checking or aligning railway track.

SEE OR SEARCH THIS CLASS, SUBCLASS:

287, for a track aligning means utilizing a sight line.

338, for a track spacing and level indicating instruments.