Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653489 | Grapple apparatus and method of operation | Kelly A. Krammer | 1997-08-05 |
| 5613722 | Method and hydraulic grapple apparatus for grasping and lifting bulk materials | Kelly A. Krammer | 1997-03-25 |
| 5593199 | Method and graple apparatus for grasping and lifting bulk materials | Kelly A. Krammer | 1997-01-14 |