Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841116 | Process for automatic fusion welding of rails | Akira Kimura, Hirohisa Fujiyama | 1989-06-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841116 | Process for automatic fusion welding of rails | Akira Kimura, Hirohisa Fujiyama | 1989-06-20 |