Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6106193 | Hydraulically driven, multiple rotor riding trowel | J. Dewayne Allen, Michael W. McKean, Timmy D. Guinn | 2000-08-22 |
| 6048130 | Hydraulically driven, multiple rotor riding trowel | J. Dewayne Allen, Michael W. McKean, Timmy D. Guinn | 2000-04-11 |
| 5352063 | Polymer concrete paving machine | J. Dewayne Allen, Ralph C. Luebke | 1994-10-04 |
| D344736 | Riding trowel for concrete finishing | J. Dewayne Allen | 1994-03-01 |
| 5238323 | Riding trowel for concrete finishing | J. Dewayne Allen | 1993-08-24 |
| 5108220 | Light weight, fast steering riding trowel | J. Dewayne Allen | 1992-04-28 |
| D323510 | Riding trowel | J. Dewayne Allen | 1992-01-28 |