Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4681207 | Escalator | Shigeru Goto, Masaru Asano, Shosaku Inoue | 1987-07-21 |
| 4569433 | Escalator system with a drop-down step | Shosaku Inoue | 1986-02-11 |
| 4557369 | Moving staircase | Masaru Asano, Shigeru Goto, Takeshi Sakurai | 1985-12-10 |
| 4483432 | Steps in an escalator | — | 1984-11-20 |