4. Metal treatment
  5. Process of modifying or maintaining internal physical...
  6. Chemical-heat removing or burning of metal

Kazushi Maruyama

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Method of cooling steel pipes

Metal treatment – Process of modifying or maintaining internal physical... – Chemical-heat removing or burning of metal
Patent

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Oil well pipe threaded joint

Pipe joints or couplings – With casing – lining or protector – Lined
Reexamination Certificate

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Packing material for refractory

Stock material or miscellaneous articles – Sheet including cover or casing
Patent

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Pipe joint

Pipe joints or couplings – Particular interface – Tapered
Reexamination Certificate

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Profile ID: LFUS-PAI-P-225154

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