Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6637111 | Method for making a boom of an excavator | Hidetoshi Sasaki, Toshio Tanaka, Nobuyoshi Masumoto | 2003-10-28 |
| 6536652 | Structure for working unit for bucket excavators and method for manufacturing the same | Hidetoshi Sasaki, Toshio Tanaka, Nobuyoshi Masumoto | 2003-03-25 |
| 6508019 | Boom of bucket type excavator and method for making same | Hidetoshi Sasaki, Toshio Tanaka, Nobuyoshi Masumoto | 2003-01-21 |