Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5117774 | Underwater viewing craft | Patrick J. English, Donald Wayne Radke | 1992-06-02 |
| 4881288 | Center feed dispenser for cleaning solution | James A. Armstrong | 1989-11-21 |
| 4805258 | Battery powered walk behind floor burnisher | Gerald P. Sitarski | 1989-02-21 |