4. Metal treatment
  5. Process of modifying or maintaining internal physical...
  6. Carburizing or nitriding using externally supplied carbon or...

Keiji Yokose

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Carburization treatment method

Metal treatment – Process of modifying or maintaining internal physical... – Carburizing or nitriding using externally supplied carbon or...
Reexamination Certificate

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Carburization treatment method and carburization treatment...

Metallurgical apparatus – Means treating solid metal – Having evacuated chamber
Reexamination Certificate

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Method and apparatus for carburizing, quenching and tempering

Metal treatment – Process of modifying or maintaining internal physical... – Carburizing or nitriding using externally supplied carbon or...
Patent

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Nitrided maraging steel and method of manufacture thereof

Metal treatment – Process of modifying or maintaining internal physical... – Carburizing or nitriding using externally supplied carbon or...
Reexamination Certificate

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Vacuum heat treatment furnace

Metallurgical apparatus – Having means for contacting a solid metalliferous material... – With heating means – e.g. – flame contact
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1759436

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