Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9733079 | Double-bead horizontal and vertical spirit level, apparatus using the spirit level, and method of measuring distance and height by using the apparatus | Li-Hua Lin, Po-Yu Wang, Chun-Yu Chang | 2017-08-15 |