US PATENT SUBCLASS 104 / 269
.~.~ Symmetrical

Current as of: June, 1999
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104 /   HD   RAILWAYS

262  DF  CAR REPLACER {7}
268  DF  .~ One way {3}
269.~.~ Symmetrical

DEFINITION

Classification: 104/269

(under subclass 268) Car-replacing frog-blocks, the frog-blocks being symmetrical longitudinally, so that they are applicable to either side of a rail for operation in the same direction, thus obviating the manufacture of rights and lefts.