Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9696561 | Linkage structure for rim and spectacle lenses and spectacles | — | 2017-07-04 |
| 7320515 | Polarized optical lens | — | 2008-01-22 |
| 4426175 | Method of and apparatus for reinforcing piling structure and improved precast concrete pile suitable for use in said method | — | 1984-01-17 |