4. Electric lamp or space discharge component or device manufacturi
  5. Process
  6. Spark plug or spark gap making

Darren C. Downs

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Spark plug with ground electrode having mechanically locked...

Electric lamp or space discharge component or device manufacturi – Process – Spark plug or spark gap making
Reexamination Certificate

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Spark plug with ground electrode having mechanically locked...

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

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Profile ID: LFUS-PAI-P-2949021

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