FERALUN
CAST METAL HAVING A SURFACE COATED BY GRANULAR MINERAL ELEMENTS, AND USED AS SURFACES FOR PUMPS, PIPES, LINING PLATES, GRATES FOR COAL-CHUTING JIGS, STAIR TREADS, TREAD SURFACES, AND SURFACES WHICH ARE HIGHLY RESISTANT TO ANY ABRADING ACTION AND WHICH HAVE ANTI-SLIPPING PROPERTIES
Expired · November 4, 1974 · 73036327 ·
