Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10947688 | Grout propeller for helical pile | Howard A. Perko, Bernard Brian Dwyer | 2021-03-16 |
| 10767334 | Grouted helical pile | Howard A. Perko, Bernard Brian Dwyer | 2020-09-08 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10947688 | Grout propeller for helical pile | Howard A. Perko, Bernard Brian Dwyer | 2021-03-16 |
| 10767334 | Grouted helical pile | Howard A. Perko, Bernard Brian Dwyer | 2020-09-08 |