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