Description: 254 implements or apparatus for applying pushing or pulling force / 254 implements or apparatus for applying pushing or pulling force/(264) apparatus for hauling or hoisting load, including driven device which contacts and pulls on cable (266) device includes rotatably driven, cable contacting drum (274) having mechanism, linked to drum or rotating element of drive, for generating control impulse to rotation retarding means or motor when torque on drum varies (275) electricity utilized in transmittal or impulse
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Patent Apps in 254/275
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