Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5006034 | Lifting apparatus | Calvin L. Stegemoeller | 1991-04-09 |
| 4918659 | Apparatus and method for adding a selected additive into a mixture | Mark A. Clark, Randy G. Fleming | 1990-04-17 |
| 4913554 | Lifting apparatus | Calvin L. Stegemoeller | 1990-04-03 |
| 4886367 | Apparatus for adding a selected additive into a mixture | Mark A. Clark, Randy G. Fleming | 1989-12-12 |
| 4854714 | Blender vehicle apparatus | Gail F. Davis, Robert L. Baker, Calvin L. Stegemoeller | 1989-08-08 |