Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B66
HOISTING; LIFTING; HAULING
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B66C
CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
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B66C2700/03
Cranes with arms or jibs; Multiple cranes
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B66C2700/0392
Movement of the crane arm; Coupling of the crane arm with the counterweights; Safety devices for the movement of the arm
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