Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4646490 | Top rail for use with handrails | Hiromitsu Naka, Takeshi Miyashiro | 1987-03-03 |
| 4602766 | Top rail of a handrail | Hiromitsu Naka, Takeshi Miyashiro | 1986-07-29 |
| 4318951 | Stair mat | Hiromitsu Naka, Takeshi Miyashiro | 1982-03-09 |