US PATENT SUBCLASS 33 / 263
.~ Structurally installed

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

227  DF  STRAIGHT-LINE LIGHT RAY TYPE {20}
263.~ Structurally installed {3}
264  DF  .~.~> Vehicle
265  DF  .~.~> Archery bow
266  DF  .~.~> Camera

DEFINITION

Classification: 33/263

(under subclass 227) Device installed in or mounted upon a device performing a function external to the subject matter of this class, the installation being made in such a manner as not to interfere with the normal operation of the device.