73794405
Apr 20, 1989
Nov 27, 1990
SEALING MATERIALS IN THE FORM OF BUTYL RUBBER PATCHES, FLEXIBLE NEOPRENE TAPES, AND RESIN-IMPREGNATED BANDAGES, FOR USE IN MAKING EMERGENCY REPAIRS ON NATURAL GAS PIPELINES MADE OF STEEL TO PREVENT LEAKING NATURAL GAS
Rubber Goods