Work management system

Assignee

• Hitachi Construction Machinery Co.

Inventors

• Isao Karube (1 patents)
• Hidehiro Iizuka (1 patents)
• Masami KAMIBAYASHI (2 patents)
• Ryota Niizeki (3 patents)
• Kunitsugu Tomita (14 patents)
• Hiroshi Watanabe (776 patents)
• Hiroyuki Adachi (202 patents)

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