Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4697820 | Ski | Keijiro Hayashi, Yasuo Saeki, Shigeru Asai | 1987-10-06 |
| 4697821 | Ski | Keijiro Hayashi, Toshimi Awano, Shigeru Asai | 1987-10-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4697820 | Ski | Keijiro Hayashi, Yasuo Saeki, Shigeru Asai | 1987-10-06 |
| 4697821 | Ski | Keijiro Hayashi, Toshimi Awano, Shigeru Asai | 1987-10-06 |