Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11440772 | Elevator pit ladder apparatus | — | 2022-09-13 |
| 10233054 | Elevator car upper handrail apparatus | Takahide Ishiguro, Naoyuki Maruyama, Hideki Miyahara, Kazuya Shindo | 2019-03-19 |