Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872794 | Tank mounting apparatus | Robert L. Baker | 1989-10-10 |
| 4854714 | Blender vehicle apparatus | Robert L. Baker, Dale E. Bragg, Calvin L. Stegemoeller | 1989-08-08 |
| 4850701 | Skid-mounted self-leveling mixer apparatus | Calvin L. Stegemoeller, Lonnie R. Walker | 1989-07-25 |
| 4802141 | Self-leveling mixer with mechanical agitation | Calvin L. Stegemoeller | 1989-01-31 |