US PATENT SUBCLASS 33 / 269
.~.~ Time computing

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

227  DF  STRAIGHT-LINE LIGHT RAY TYPE {20}
268  DF  .~ Celestial {1}
269.~.~ Time computing {1}
270  DF  .~.~.~> Including gnomonic indicator (e.g., sundial, etc.) {1}

DEFINITION

Classification: 33/269

(under subclass 268) Device including means whereby the time of day may be determined.

SEE OR SEARCH CLASS

368, Horology: Time Measuring Systems or Devices, appropriate subclasses for time measuring instruments, per se.