Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10221538 | Helical pile leads and extensions | Gary Leonard Seider | 2019-03-05 |
| 9598831 | Helical screw pile | Gary Leonard Seider | 2017-03-21 |
| 9115478 | Helical screw pile | Gary Leonard Seider | 2015-08-25 |
| 8506207 | Helical screw pile | Gary Leonard Seider | 2013-08-13 |
| 4543820 | Tapered blade in situ soil testing device | Richard L. Handy | 1985-10-01 |
| 4539851 | Soil and rock shear tester | — | 1985-09-10 |
| 4474066 | Portable variable expansion testing device | — | 1984-10-02 |
| 4458525 | Borehole plate test | Richard L. Handy | 1984-07-10 |
| 4411160 | Vane modulus soil tester | John M. Pitt | 1983-10-25 |