Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4371569 | Method for reinforcing and repairing piping | Toshihisa Kanamaru | 1983-02-01 |
| 4308824 | Apparatus for reinforcing and repairing piping | Toshihisa Kanamaru | 1982-01-05 |
| 4216738 | Method of renewing water pipe, including coating thereof, and apparatus therefor | — | 1980-08-12 |