73015611
Mar 11, 1974
Oct 28, 1975
POLYTETRAFLUOROETHYLENE MACHINERY PARTS-NAMELY, PISTON RINGS, [ VALVE SEATS, ] AND BEARINGS
Machinery[ ELECTRICAL APPARATUS-NAMELY, POLYTETRAFLUOROETHYLENE RESISTOR PLATES, CIRCUIT BREAKER ARC SHIELDS ]
Electrical and Scientific ApparatusPOLYTETRAFLUOROETHYLENE MACHINED AND MOLDED PARTS-NAMELY, SEALS, [ BLOCKS, ] RINGS, [ COUPLING LINERS, ] BACK-UP RINGS [ , SCRAPER RINGS, O-RINGS, AND SEATS ]
Rubber Goods