Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12305350 | Pile installation system | Howard A. Perko, Troy Lyver | 2025-05-20 |
| D1042095 | Rebar positioning device | — | 2024-09-17 |
| 11530534 | Dry-stack masonry wall supported on hollow piles | Howard A. Perko, Troy Lyver | 2022-12-20 |
| 11066827 | Precision dry-stack masonry unit | — | 2021-07-20 |
| D854709 | Masonry unit | — | 2019-07-23 |