72340459
Oct 13, 1969
Jan 25, 1972
NATURAL AND SYNTHETIC RESINS FOR USE IN THE INDUSTRIAL ARTS; FOUNDRY PRODUCTS-NAMELY, CORE WASHES, FOUNDRY PARTINGS, FOUNDRY SAND, FOUNDRY FLOUR, SAND STABILIZERS, FACINGS, AND CORE PASTE; [BITUMINOUS PRODUCTS INCLUDING PITCH AND ASPHALT]
Chemicals