US PATENT SUBCLASS 297 / 400
.~.~.~ Adjustable

Current as of: June, 1999
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297 /   HD   CHAIRS AND SEATS

391  DF  HEADREST {12}
397  DF  .~ Portable, with seat attacher {2}
399  DF  .~.~ U-clamp mounted {1}
400.~.~.~ Adjustable {2}
401  DF  .~.~.~.~> Spring clamp
402  DF  .~.~.~.~> Screw clamp

DEFINITION

Classification: 297/400

(under subclass 399) Device wherein the parts of the clamp are movable relative to each other so as to accommodate the rest to fit seat components of different size or to permit attachment and removal.