4. Measuring and testing
  5. Fluid pressure gauge
  6. Combined

Robert S. Ingham

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Spark plug with concentric pressure sensor

Measuring and testing – Fluid pressure gauge – Combined
Patent

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Spark plug with pressure sensor

Electric lamp and discharge devices – Spark plugs – Particular electrode structure or spacing
Reexamination Certificate

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Profile ID: LFUS-PAI-P-874729

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