Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B66
HOISTING; LIFTING; HAULING
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B66B
ELEVATORS; ESCALATORS OR MOVING WALKWAYS
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2201/00
Aspects of control systems of elevators
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B66B2201/30
Details of the elevator system configuration
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B66B2201/307
Tandem operation of multiple elevator cars in the same shaft
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