US PATENT SUBCLASS 280 / 643
.~.~.~.~.~.~ Convertible

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

29  DF  WHEELED {21}
638  DF  .~ Extensible {6}
639  DF  .~.~ Folding {7}
38  DF  .~.~.~ Pivoted wheel carrier {2}
641  DF  .~.~.~.~ Transverse axis {2}
642  DF  .~.~.~.~.~ Three- or four-wheeled chair, baby carriage, or stroller {2}
643.~.~.~.~.~.~ Convertible

DEFINITION

Classification: 280/643

(under subclass 642) Folding vehicles designed to provide a secondary function different from a primary function, by the addition, subtraction or rearrangement of parts; e.g., carriage to stroller or bed to seat.