4. Electricity: motive power systems
  5. Positional servo systems
  6. Vehicular guidance systems with single axis control

Kenneth H. Ball

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Boat guidance system

Electricity: motive power systems – Positional servo systems – Vehicular guidance systems with single axis control
Patent

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Capacitive pressure transducer for use in respirator apparatus

Measuring and testing – Fluid pressure gauge – Diaphragm
Patent

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Collision avoidance system

Railway switches and signals – Cab signal or train control – Motive-power control
Patent

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High sensitivity pressure switch

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate

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Profile ID: LFUS-PAI-P-753630

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