Title:
Indicator for cranes and the like
United States Patent 3139988
Inventors:
Brekelbaum, Erwin C.
Noll, George C.
Klos, George B.
Nielsen, John D.
Publication Date:
07/07/1964
Export Citation:
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Assignee:
THEW SHOVEL COMPANY
Primary Class:
212/282
International Classes:
B66C23/90; B66C23/00
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US Patent References:
2988040Means for actuating safe load indicating devices for cranes or the like
2772411Boom angle indicator for cranes
2374298Boom angle and radius indicator
2030529Safety device for cranes and the like