US PATENT SUBCLASS 266 / 174
.~.~ With safety device


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



266 /   HD   METALLURGICAL APPARATUS

168  DF  MEANS FOR TREATING ORES OR FOR EXTRACTING METALS {3}
171  DF  .~ By means applying heat to work, e.g., furnace {10}
174.~.~ With safety device


DEFINITION

Classification: 266/174

(under subclass 171) Device having means a) to prevent a dangerous or potentially dangerous operating condition from occurring within the treating means or b) to protect operating personnel from injury.