Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875261 | Back-up roll in a rolling mill | — | 1989-10-24 |
| 4815418 | Two fluidized bed type boiler | Sadahiko Maeda, Hideaki Takahashi, Yasumasa Idei | 1989-03-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875261 | Back-up roll in a rolling mill | — | 1989-10-24 |
| 4815418 | Two fluidized bed type boiler | Sadahiko Maeda, Hideaki Takahashi, Yasumasa Idei | 1989-03-28 |