4. Internal-combustion engines
  5. Engine speed regulator
  6. Having plural throttle valve structure

John Giffin

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Variable throttle valve

Internal-combustion engines – Engine speed regulator – Having plural throttle valve structure
Reexamination Certificate

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Variable valve

Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2716898

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