Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6347838 | Method for replacing cutters of tunnel-excavating machine, method for excavating tunnel, and tunnel excavating machine | Masahiko Sugiyama | 2002-02-19 |
TM
Tsunematsu Mukaidani
Tobishima: 1 patents #1 of 2Top 50%
Overall (2002): #263,255 of 266,432Top 100%
1
Patents 2002