Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294309 | Electro-abrasive polishing of the inner surface of pipes to extra-smooth mirror finish | Keiichirou Asagawa | 1994-03-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294309 | Electro-abrasive polishing of the inner surface of pipes to extra-smooth mirror finish | Keiichirou Asagawa | 1994-03-15 |