Pipe resistance butt welding apparatus

Assignee

No assignee recorded.

Inventors

• Boris E. Paton (25 patents)
• Vladimir K. Lebedev (22 patents)
• Sergei I. Kuchuk-Yatsenko (33 patents)
• Vasily A. Sakharnov (18 patents)
• Boris A. Galyan (7 patents)
• Unknown

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