US4270087A
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Apparatus for testing permanent magnets using electro-magnets and Hall sensors
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US4208656A
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Battery lift magnet control
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US3938011A
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Tape degausser
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US3590351A
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Motor control, including brake applying, and suppressing of the counter emf, and method
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GB1270701A
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Drive circuit for a d.c. motor
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US3588651A
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Solid state electrical control for a reversibly movable member
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US3573586A
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Servo control for movement of a device through successive steps
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GB1207210A
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Improvements in or relating to apparatus for and method of magnetizing
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Magnetizing and demagnetizing apparatus and method
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US3571911A
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Method of treating a workpiece
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Movement control
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US3473287A
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Magnetically and electrically controlled measuring and packaging apparatus and method
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US3564292A
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Electrical interstage control
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Apparatus for and method of magnetizing circumferential members
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GB1143227A
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Movement control apparatus
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US3401313A
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Apparatus and method for controlling magnetism
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US3378734A
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Method of demagnetizing
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US3445620A
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Apparatus for and method of demagnetizing
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US3478876A
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Magnetic parts sorter
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US3360694A
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Electrical control means
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