4. Pipe joints or couplings
  5. With casing, lining or protector
  6. Insulated

Keizo Hosoya

Inventor

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Clamp-type pipe joint

Pipe joints or couplings – With casing – lining or protector – Insulated
Patent

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Heating furnace tube and method of manufacturing the same

Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate

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Profile ID: LFUS-PAI-P-1898971

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