US PATENT SUBCLASS 280 / 43.16
.~.~.~.~ 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}
43.16.~.~.~.~ With means to vary distance between wheels

DEFINITION

Classification: 280/43.16

(under subclass 43.13) Vehicle wherein the distance between any two vertically adjustable wheels is varied as they are vertically adjusted.

SEE OR SEARCH THIS CLASS, SUBCLASS:

43.15, for wheeled vehicles having means for adjusting wheels on different axles and having nonwheel means for engaging the vehicle supporting surface and means to vary the distance between the wheels as they are vertically adjusted.