Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8561507 | Screwdriver | — | 2013-10-22 |
| 7069828 | Tool having adjustable handle | — | 2006-07-04 |
| 7051629 | Tool handle adjustable to different length | — | 2006-05-30 |
| 6561378 | Tissue dispensing apparatus | Thomas Harold Roessler, Barbara A. Lyon, Franklin M. C. Chen | 2003-05-13 |
| 6243902 | Tool handle combination | — | 2001-06-12 |
| 6186036 | Tool combination | — | 2001-02-13 |
| 6164172 | Tool handle having tool members receiving structure | — | 2000-12-26 |
| 6079846 | Socket having a light device | — | 2000-06-27 |
| 6053077 | Ratchet wrench having two driving stems | — | 2000-04-25 |
| 5943925 | Tool having a foldable structure | — | 1999-08-31 |
| 5927162 | Tool having an adjustable driving stem | — | 1999-07-27 |
| 5896606 | Tool having an extendible magnet | — | 1999-04-27 |
| 5887306 | Tool combination having screw driver and knife | — | 1999-03-30 |
| 5879072 | Tool box having a light device | — | 1999-03-09 |
| 5782150 | Screw driver handle | — | 1998-07-21 |
| 5704260 | Screw driver handle | — | 1998-01-06 |