ROUSTABOUT CRANE MANUFACTURED BY THE HUGHES-KEENAN COMPANY MANSFIELD, OHIO USA
SWINGING OR FIXED BOOM MOBILE CRANES MOUNTED ON STANDARD INDUSTRIAL TYPE WHEEL OR CRAWLER TRACTORS SAID TRACTORS SOMETIMES BEING BUILT AS PART OF THE COMPLETE CRANE WITH SAID CRANE OPERATIONS IN ALL CASES BEING PERFORMED BY POWER DERIVED FROM SAID TRACTORS
Expired · September 19, 1947 · 71535037 ·