Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6643582 | Work management method, management system and management apparatus suited to work sites | Toichi Hirata, Genroku Sugiyama, Hiroshi Watanabe, Koichi Shibata, Hideki Komatsu | 2003-11-04 |