US PATENT SUBCLASS 193 / 2 B
.~ Wall vibrators

Current as of: June, 1999
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193 /   HD   CONVEYORS, CHUTES, SKIDS, GUIDES, AND WAYS

2 R  DF  CHUTES {25}
2 B.~ Wall vibrators

Unofficial Alpha Subclasses: R A B C D E

DEFINITION

Classification: 193/2

(under the class definition) Apparatus having either pipes or troughs through which material may pass under the influence of gravity.

(1) Note. See Class 104, Railways, subclasses 53 and 69.

(2) Note. See Class 182, Fire Escape, Ladder, or Scaffold, subclasses 48+ for a chute with a handrail or ladder, or with means to sustain life.