71496397
Feb 11, 1946
Oct 14, 1947
[ GRINDING WHEELS ], RUBBING BRICKS, GRIDING BLOCKS MADE OF ABRASIVE MATERIALS, IN SQUARE, RECTANGULAR, TRIANGULAR, OR ROUND FORM, SEGMENTAL WHEELS AND STICKS, ALL RESINOID BONDED WITH ALUMINUM OXIDE OR CORUNDUM ABRASIVE GRAINS
Lubricants and Fuels