Shield tunneling with optional section and machine

Assignee

• Kobe Steel

Inventors

• Shohei Chida (2 patents)
• Masami Kozaki (1 patents)
• Toshinori Asahi (2 patents)
• Chiyoaki Ono (1 patents)
• Seiji Iwasa (1 patents)
• Taizou Fukunaga (1 patents)
• Moriyuki Takemura (1 patents)

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