US PATENT SUBCLASS 105 / 234
.~.~ Screw

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

231  DF  TENDER {3}
232  DF  .~ Coal feed {3}
234.~.~ Screw

DEFINITION

Classification: 105/234

(under subclass 232) Coal-feeding tenders having screw or helical devices for moving the coal forward in a tender.