Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4934900 | Assembly forming a cylindrical cage of spaced apart vanes | Bernard H. Schonbach, Roger A. Powell, Belle M. Lukacz | 1990-06-19 | $1,765,000 |
| 4708644 | Apparatus for roasting fine grained material | Thomas R. Lawall | 1987-11-24 | $2,315,000 |
| 4620674 | Pneumatic actuated roller assembly for a roller mill | Kenneth W. Hanstine, Jeffrey N. Nelson | 1986-11-04 | $2,073,000 |
| 4615647 | Pneumatic conveying device and flap valve | — | 1986-10-07 | $1,968,000 |
| 4494564 | Flap valve | — | 1985-01-22 | $759,000 |