Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5657876 | Abrasive grit material recovery system | Donald C. Allebach, Jr., Dieter A. Konitzer, Jr. | 1997-08-19 |
| 5622265 | Abrasive grit material recovery system | Donald C. Allebach, Jr., Dieter A. Konitzer, Jr. | 1997-04-22 |