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

Ken-ichiro Hara

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Keyboard lid opening and closing mechanism for keyboard...

Music – Instruments – Stringed
Reexamination Certificate

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Maraging steel and method of producing the same

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

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Method for producing steel ingot

Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Reexamination Certificate

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Support apparatus for sound members of musical instrument

Music – Instruments – Rigid vibrators
Patent

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Profile ID: LFUS-PAI-P-3164078

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