72221932
Jun 24, 1965
Sep 20, 1966
CONCRETE PIPE MACHINERY, APPARATUS AND EQUIPMENT-NAMELY, CONCRETE MIXERS, CEMENT AND AGGREGATE FEEDERS, BINS, AND HOPPERS, PIPE FORMS AND PIPE PALLETS, PIPE FORM JACKS, HOISTS, CRANES, AND WIRE ROLLERS
Yarns and Threads