US PATENT SUBCLASS 280 / 43.15
.~.~.~.~.~ With means to vary distance between wheels

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
638  DF  .~ Extensible {6}
43  DF  .~.~ Vertically adjustable wheels {8}
43.13  DF  .~.~.~ Interconnecting means for adjusting wheels on different axles {2}
43.14  DF  .~.~.~.~ With nonwheel means for engaging the supporting surface {1}
43.15.~.~.~.~.~ With means to vary distance between wheels

DEFINITION

Classification: 280/43.15

(under subclass 43.14) Vehicle wherein the distance between any two vertically adjustable wheels is varied as they are vertically adjusted.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43.16, for wheeled vehicles having means for adjusting wheels on different axles and having means to vary the distance between the wheels as they are vertically adjusted.