4. Alloys or metallic compositions
  5. Ferrous
  6. Nine percent or more chromium containing

Kenichi Kumagai

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Cold working stainless steel

Alloys or metallic compositions – Ferrous – Nine percent or more chromium containing
Patent

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Spark plug

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

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Spark plug

Electric lamp and discharge devices – Spark plugs – Shaped electrode chamber – insulator end – shell skirt – baffle...
Reexamination Certificate

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Spark plug and method of producing spark plug

Electric lamp and discharge devices – Spark plugs
Reexamination Certificate

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Spark plug for internal combustion engine

Electric lamp and discharge devices – Spark plugs
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1593441

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