US PATENT SUBCLASS 186 / 28
.~.~.~.~ Self-propelled
Current as of: June, 1999
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DEFINITION
Classification: 186/28
Wheeled carriers propelled by a self-contained motor of any form.
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7,
SEE OR SEARCH CLASS
104, Railways,
112, 124 and 295+.
105, Railway Rolling Stock,
148,.
254, Implements or Apparatus for Applying Pushing or Pulling Force, 134.5+, for tractors utilized to pull wire into conduits or along a messenger.