Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5669041 | Retracting cleaner with defined pivot points and/or sliding seals | Bruce E. Thayer, Dennis G. Gerbasi | 1997-09-16 |
| 5669055 | Dual brush cleaner retraction mechanism and variable inertia drift controller for retractable cleaner | Bruce E. Thayer, Dennis G. Gerbasi, Christopher B. Miller | 1997-09-16 |
| 5600425 | Cleaner system with central augering | Bruce E. Thayer, Dennis G. Gerbasi | 1997-02-04 |