Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12241210 | Cordless electrically-powered concrete screed | Kraig Allen Pyle, John Allen Armstrong | 2025-03-04 |
| 12195932 | Modular concrete screed system | John Allen Armstrong, Kenneth A. Pyle | 2025-01-14 |
| 11753779 | Modular concrete screed system | John Allen Armstrong, Kenneth A. Pyle | 2023-09-12 |
| 11725349 | Cordless electrically-powered concrete screed | Kraig Allen Pyle, John Allen Armstrong | 2023-08-15 |
| 10844554 | Concrete screed power control linkage | Kraig Allen Pyle, John Allen Armstrong | 2020-11-24 |
| 10844555 | Drive coupler for drill output shaft | Kraig Allen Pyle, John Allen Armstrong | 2020-11-24 |
| 10837147 | Cordless electrically-powered concrete screed | Kraig Allen Pyle, John Allen Armstrong | 2020-11-17 |