3 ABRASIVES-NAMELY, ABRASIVE GRAINS FOR POLISHING AND BLASTING
FIRST USE AT LEAST AS EARLY AS JANUARY 1968, IN COMMERCE AT LEAST AS EARLY AS JANUARY 1968, OCT 1 1939, IN A DIFFERENT FORM. FIRST USE AT LEAST AS EARLY AS JANUARY 1968, IN COMMERCE AT LEAST AS EARLY AS JANUARY 1968, OCT 1 1939, IN A DIFFERENT FORM.