US PATENT SUBCLASS 213 / 100 R
.~.~ Interengaging hooks and knuckles

Current as of: June, 1999
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213 /   HD   RAILWAY DRAFT APPLIANCES

75 R  DF  COUPLINGS {9}
77  DF  .~ Counterpart {2}
100 R.~.~ Interengaging hooks and knuckles {6}
101  DF  .~.~.~> Arrowhead type {1}
103  DF  .~.~.~> Transversely sliding bill
104  DF  .~.~.~> Horizontally swinging {4}
172  DF  .~.~.~> Vertically swinging {1}
174  DF  .~.~.~> Rotating
100 W  DF  .~.~.~> Willison coupler

Unofficial Alpha Subclasses: R W

DEFINITION

Classification: 213/100

Wherein devices of the class indicated a hook or knuckle on one coupler is adapted for engagement with a similar hook or knuckle on a mating coupler.