4. Electricity: motive power systems
  5. Plural, diverse or diversely controlled electric motors
  6. Running-speed control

Matti Kemppainen

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Arrangement for controlling the loading element of a crane

Electricity: motive power systems – Positional servo systems – Time-sharing or multiplexing systems
Patent

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Method for controlling crane brake operation

Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Reexamination Certificate

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System for directing an apparatus such as a crane bridge moving

Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Running-speed control
Patent

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Profile ID: LFUS-PAI-P-1250983

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