Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6095212 | Lumber production machine not requiring seasoning and manufacturing method thereof | by Masanori Izumi, heir, by Takayoshi Izumi, heir | 2000-08-01 |
| 5392530 | Method of seasoning lumber | — | 1995-02-28 |