Fire carcass resilient rubber compositions
 Vulcanizable rubber compounds useful for preparing pneumatic tires in which an unoxidized petroleum pitch serves to replace partially or totally the aromatic extender oil content customarily included in such compounds. 
Ashland Oil, Inc.
C B B C C C
C08L B60C B60C C08L C08L C08L
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Marvin L. James E. Lawrence E. Duane K.
Deviney, Jr. Lewis Whittington Chapman