Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6533069 | Multi-use ladder support apparatus | — | 2003-03-18 |
| 5694796 | Hinged lock with detent positions | Joyce Lynne Hahn, George Henry Preis | 1997-12-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6533069 | Multi-use ladder support apparatus | — | 2003-03-18 |
| 5694796 | Hinged lock with detent positions | Joyce Lynne Hahn, George Henry Preis | 1997-12-09 |