Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8141400 | Keypad lockset | Birk Cliff Sorensen, Ping Hsien Tsai, Wai P. Wong, John E. Walsh | 2012-03-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8141400 | Keypad lockset | Birk Cliff Sorensen, Ping Hsien Tsai, Wai P. Wong, John E. Walsh | 2012-03-27 |