US PATENT SUBCLASS 14 / 60
.~.~.~.~ Vertically swinging

Current as of: June, 1999
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14 /   HD   BRIDGES

31  DF  DRAW {10}
50  DF  .~ Gates {2}
*  DD  .~.~ Bridge operated {2}
*  DD  .~.~.~ Displacement {4}
60.~.~.~.~ Vertically swinging {1}
61  DF  .~.~.~.~.~> Locking

DEFINITION

Classification: 14/60

(under subclass 50) Displacement-type bridge-operated gates which are vertically sliding.