Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047032 | Combination lock with two dial plates | Chao-Hsuan Liu, Wen-Kuei Liu | 2011-11-01 |
| 7975517 | Multistage lock apparatus | Wen-Kuei Liu, Chao-Hsuan Liu | 2011-07-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047032 | Combination lock with two dial plates | Chao-Hsuan Liu, Wen-Kuei Liu | 2011-11-01 |
| 7975517 | Multistage lock apparatus | Wen-Kuei Liu, Chao-Hsuan Liu | 2011-07-12 |