Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321293 | Stair mat | — | 1982-03-23 |
| 4321294 | Stair mat | — | 1982-03-23 |
| 4318951 | Stair mat | Takeshi Miyashiro, Yoshihide Sugimoto | 1982-03-09 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4321293 | Stair mat | — | 1982-03-23 |
| 4321294 | Stair mat | — | 1982-03-23 |
| 4318951 | Stair mat | Takeshi Miyashiro, Yoshihide Sugimoto | 1982-03-09 |