Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378733 | Bridge deck paver with enhanced hydraulic shifting | Michael W. McKean | 2025-08-05 |
| 11619010 | Roller tube concrete paver with retractable vibrator assembly | J. Dewayne Allen | 2023-04-04 |
| 11326359 | Concrete surface polishing trowel and conversion adaptor | Lee T Gibson, Brian M. Adamchuk | 2022-05-10 |
| 10100537 | Ventilated high capacity hydraulic riding trowel | — | 2018-10-16 |
| 8360680 | Hydraulic riding trowels with automatic load sensing | J. Dewayne Allen, Edward Andrew Waldon, Scott R. Sugg | 2013-01-29 |
| 7690864 | Hydraulic riding trowel with automatic load sensing system | J. Dewayne Allen, Mike Woodside, Michael W. McKean, Jack C. Wilson | 2010-04-06 |
| 6582153 | Edge guarded power riding trowel | J. Dewayne Allen | 2003-06-24 |
| D474203 | Riding trowel with rotatable ring edge guard | J. Dewayne Allen | 2003-05-06 |
| D466909 | Riding trowel having edge guards with safety covers | J. Dewayne Allen | 2002-12-10 |
| 6106193 | Hydraulically driven, multiple rotor riding trowel | J. Dewayne Allen, Michael W. McKean, Hugh L. Adams | 2000-08-22 |
| 6089786 | Dual rotor riding trowel with proportional electro-hydraulic steering | J. Dewayne Allen, Michael W. McKean | 2000-07-18 |
| 6089787 | Transformable two-person floating screed with automatic grade control | J. Dewayne Allen | 2000-07-18 |
| 6048130 | Hydraulically driven, multiple rotor riding trowel | J. Dewayne Allen, Michael W. McKean, Hugh L. Adams | 2000-04-11 |
| 6019545 | Surface finishing machine with rotatable guard | J. Dewayne Allen | 2000-02-01 |
| D416564 | Rotatable guard for a finishing machine | J. Dewayne Allen | 1999-11-16 |
| 5967696 | Riding trowel with variable ratio transmission | J. Dewayne Allen | 1999-10-19 |