Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE48306 | Stair exerciser apparatus | Mrako A. Fenster, Derek Nelson, Chih-Ming Lai, Kung-Lung Lai, Chieh-Wen Lin +2 more | 2020-11-17 |
| RE47331 | Stair exerciser apparatus | Mrako A. Fenster, Derek Nelson, Chih-Ming Lai, Kung-Lung Lai, Chieh-Wen Lin +2 more | 2019-04-02 |
| 8974353 | Stair exerciser apparatus | Mrako A. Fenster, Derek Nelson, Chih-Ming Lai, Kung-Lung Lai, Chieh-Wen Lin +2 more | 2015-03-10 |
| 8702571 | Stair exerciser apparatus | Mrako A. Fenster, Derek Nelson, Chih-Ming Lai, Kung-Lung Lai, Chieh-Wen Lin +2 more | 2014-04-22 |