71514420
Dec 17, 1946
Oct 21, 1947
ROAD BUILDING EQUIPMENT-NAMELY, ROAD ROLLERS, PNEUMATIC-TIRED EARTH PACKING ROLLERS USED IN MAKING ROAD BEDS, TOOTHED EARTH-TAMPING ROLLERS COMMONLY CALLED SHEEPFOOT ROLLERS, SELF-PROPELLED THREE-WHEELED SOIL-PACKING ROLLERS, AND SELF-PROPELLED SOIL-PACKING TANDEM ROLLERS
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