GRAPHITAR
GRAPHITE, THE PARTICULAR CHARACTER OF THE MATERIAL BEING THAT IT CONTAINS OR CONSISTS OF GRAPHITE PREPARED FOR THE MANUFACTURE OF MOLDED CARBON PRODUCTS, INCLUDING BEARINGS, SLIDING PLATES, CLUTCH RELEASE BEARINGS, SEAL RINGS FOR COMPRESSORS, LIQUID METER PISTONS, OR DISCS, MECHANICAL SEALS ON WATER PUMPS, TURBINE PACKING RINGS, ELEVATOR GIBS, THRUST BEARINGS, ELECTRICAL CONTACTS, LINING FOR CHEMICAL PROCESSING TANKS, AND FRICTION BLOCKS ON BRAKES
Expired · March 16, 1938 · 71404140 ·