Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6953320 | Ventilation fan | Daniel G. Hansen | 2005-10-11 |
| 6616404 | Ventilation fan | Daniel G. Hansen | 2003-09-09 |
| 6386828 | Ventilation fan | Daniel G. Hansen | 2002-05-14 |
| 6237487 | Squeegee blade holder | — | 2001-05-29 |
| 6186688 | Disposable magnetic fingerprint brush | — | 2001-02-13 |
| D333962 | Corner clamp for a window printer | — | 1993-03-16 |
| D291915 | Combined mobile imaging and scanning machine for radiation detection | — | 1987-09-15 |
| D291916 | Combined mobile imaging and scanning machine for radiation detection | — | 1987-09-15 |
| 4517894 | Modular screen printing apparatus | John C. Hoffend | 1985-05-21 |
| 4501379 | Newspaper dispensing apparatus | William Halone | 1985-02-26 |
| 4496126 | Table mounted universally positionable book holder enabling readers _to turn pages easily without hands | R. Stanley Melton | 1985-01-29 |