4. Electricity: motive power systems
  5. Positional servo systems
  6. 'reset' systems

William J. Barrett

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Actuating device

Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – With magneto-mechanical motive device
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Atmosphere monitoring electrochemical cell

Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
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Automatic control system

Electricity: motive power systems – Positional servo systems – 'reset' systems
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Automatic control system with integrator offset

Electricity: motive power systems – Positional servo systems – 'reset' systems
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Profile ID: LFUS-PAI-P-719244

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