US PATENT SUBCLASS 280 / 144
.~.~.~ Varying width adjustment

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

29  DF  WHEELED {21}
80.1  DF  .~ Running gear {20}
143  DF  .~.~ Bolsters and standards {5}
144.~.~.~ Varying width adjustment

DEFINITION

Classification: 280/144

(under subclass 143) Bolsters having means operative to vary the distance between the standards to accommodate varying widths of load or load-carriers.

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638+, for extensible vehicles.