February 28, 1931 Trademarks
DURO-POWR
Filed: February 28, 1931
ELECTRIC BATTERIES
Owned by: DURACELL INC.
Serial Number: 71311570
FERROGRIT
Filed: February 28, 1931
SAFETY STAIR TREADS, FLOOR PLATES, AND RAMP PLATES
Owned by: WOOSTER PRODUCTS, INC.
Serial Number: 71311588
