4. Electric lamp and discharge devices
  5. Spark plugs
  6. With specific joint structure

Heinz Ulm

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Electrodes, method for production thereof and spark plugs...

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

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Method for producing a spark plug electrode

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

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Spark plug electrode including a profiled noble-metal part

Electric lamp and discharge devices – Spark plugs – With specific joint structure
Reexamination Certificate

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Spark plug for an internal combustion engine and method for...

Electric lamp and discharge devices – Spark plugs
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2672796

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