71252382
Jul 21, 1927
Oct 30, 1928
PILE DRIVERS, LOCOMOTIVE CRANES, CRAWLER CRANES, CONCRETE MIXERS, SHOVELS, CONVEYOR CABLEWAYS, TRACTOR CRANES, DIVING OUTFITS EXCEPT THE SUITS, HOSE LINES, AND CABLE LINES THEREOF; LOCOMOTIVES, DIPPER DREDGES, HYDRAULIC DREDGES, AND CLAMSHELL DREDGES, ALL EMPLOYED IN RIVER AND HARBOR IMPROVEMENTS
Yarns and Threads