Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812339 | Artificial soil and construction of bed soil for putting green using artificial soil | Masashi Shibata, Iwao Hayakawa | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812339 | Artificial soil and construction of bed soil for putting green using artificial soil | Masashi Shibata, Iwao Hayakawa | 1989-03-14 |