US PATENT SUBCLASS 105 / 430
.~.~ With steps

Current as of: June, 1999
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105 /   HD   RAILWAY ROLLING STOCK

425  DF  PLATFORMS {2}
426  DF  .~ Trapdoors {6}
430.~.~ With steps {1}
431  DF  .~.~.~> Convertible

DEFINITION

Classification: 105/430

(under subclass 426) Trap doors operatively connected with the shiftable steps located beneath the trap door.

SEE OR SEARCH THIS CLASS, SUBCLASS:

427, for trap doors, vertical gates or doors and movable steps all operatively connected together.