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Radiator having a fan in variable rotation speed

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator
Reexamination Certificate

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Radio controlled model control system with nonlinear trigger-to-

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent

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Reduction of electric motor surge current by non-linear limiting

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Field control – or field and armature control – by analog...
Patent

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Rod antenna control system for automobiles

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent

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Rotation control apparatus employing a comb filter and phase err

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Field control – or field and armature control – by analog...
Patent

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Rotation detection or speed pickup device for miniature d-c moto

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Field control – or field and armature control – by analog...
Patent

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Rotation drive device

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent

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Rotation drive device

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent

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Rotational speed control device for an electric motor

Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Reexamination Certificate

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