Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7108587 | Backup shoe for microfinishing and methods | — | 2006-09-19 |
| 6645060 | Expandable wheel for supporting an endless abrasive belt | — | 2003-11-11 |
| 6371837 | Method of refining a surface | — | 2002-04-16 |
| 6142858 | Backup pad for abrasive articles | — | 2000-11-07 |
| 6095910 | Surface treatment article having a quick release fastener | — | 2000-08-01 |
| 5727988 | Method and apparatus for locating and holding a work piece | Bradley W. Keller, Andrew A. Larson | 1998-03-17 |
| 5339570 | Contact wheel | Steven E. Amundson | 1994-08-23 |
| 5305555 | Belt grinding assembly having pivoting means | Bradley W. Keller, Robert P. Miller | 1994-04-26 |
| 5165204 | Tool holder assembly | Bradley W. Keller | 1992-11-24 |
| 5140775 | Belt grinding assembly | Bradley W. Keller, Clarence I. Steinback | 1992-08-25 |