US PATENT SUBCLASS 14 / *
.~.~ Hand or motor operated

Current as of: June, 1999
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14 /   HD   BRIDGES

31  DF  DRAW {10}
50  DF  .~ Gates {2}
*.~.~ Hand or motor operated {3}
51  DF  .~.~.~> Horizontally swinging
52  DF  .~.~.~> Vertically sliding
53  DF  .~.~.~> Vertically swinging