Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685377 | Auto-return function for a bulldozer ripper | Richard A. Arstein | 1997-11-11 |
| 5682955 | Blade control system for an earthmoving blade | Steven L. Groth, Richard A. Arstein, Randall A. Harlow, David P. Smith | 1997-11-04 |