Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6415386 | Cryptogram lock system with automatically variable true random code tonglingge | Weizhi Tan | 2002-07-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6415386 | Cryptogram lock system with automatically variable true random code tonglingge | Weizhi Tan | 2002-07-02 |