US PATENT SUBCLASS 104 / 257
.~ Displaceable chock

Current as of: June, 1999
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104 /   HD   RAILWAYS

249  DF  CAR STOPS {7}
257.~ Displaceable chock

DEFINITION

Classification: 104/257

(under subclass 249) Car-stops comprising wheel-chocks

located along the trackway for engagement with car-wheels and designed to be seated on the rail or shifted therefrom at will.