71512761
Nov 18, 1946
May 2, 1950
TRAILERS PROVIDED WITH ONE OR TWO OR THREE PAIRS OF WHEELS OR TRACK LAYING WHEEL UNITS WHICH SUITABLY AND USUALLY BUT NOT INVARIABLY ARE DRAWN BY TRACTORS OR TRUCKS-NAMELY, 2-WAY DUMP TRAILERS, SIDE DUMP TRAILERS, BOTTOM DUMP TRAILERS, STAKE PLATFORM TRAILERS, TRAILERS WITH LOAD-ENGAGING BUNKS, TRACTOR WAGONS, AND QUARRY TRAILERS
Nonmetallic Building Materials