US PATENT SUBCLASS 266 / 269
.~ Having drain means or cleaner insertion means, e.g., punch hole

Current as of: June, 1999
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266 /   HD   METALLURGICAL APPARATUS

265  DF  MEANS FOR INTRODUCING FLUENT INTO VESSEL, E.G., TUYERE {4}
269.~ Having drain means or cleaner insertion means, e.g., punch hole

DEFINITION

Classification: 266/269

(under subclass 265) Device wherein means are provided which will either allow a blockage removing cleaning implement to be inserted into the introducing means or allows undersized material contained within the introducing means to run off.