Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6702514 | Paving material for footways and method of producing the same | Tetsuo Itoh, Koichi Mahira | 2004-03-09 |
| 4910073 | Bowling lane and method of repairing same | Hiroshi Tamura, Fumio Yamamoto | 1990-03-20 |