Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12378824 | HDD reamer having removable cutting teeth | — | 2025-08-05 |
| 12352165 | Pullback system for drilling tool | Michael D. Langenfeld, Tyler J. Dorin | 2025-07-08 |
| 12264543 | Drill string joint for horizontal directional drilling system | — | 2025-04-01 |
| 11913287 | Mounting arrangement for pullback adaptor | Michael D. Langenfeld | 2024-02-27 |
| 11891859 | HDD reamer having removable cutting teeth | — | 2024-02-06 |
| 11808151 | Dual rod directional drilling system | Michael D. Langenfeld | 2023-11-07 |
| 11697967 | Pullback system for drilling tool | Michael D. Langenfeld, Tyler J. Dorin | 2023-07-11 |
| 11578537 | HDD reamer having removable cutting teeth | — | 2023-02-14 |
| 11180960 | HDD reamer having removable cutting teeth | — | 2021-11-23 |
| 11149501 | Rod coupler and coupled rod assembly | Michael D. Langenfeld | 2021-10-19 |
| 11105156 | Pullback system for drilling tool | Tyler J. Dorin, Michael D. Langenfeld | 2021-08-31 |
| D927694 | Intraoral orthosis | — | 2021-08-10 |
| 10961779 | Dual rod directional drilling system | Michael D. Langenfeld | 2021-03-30 |
| 10851588 | Dual rod directional drilling system | Michael D. Langenfeld | 2020-12-01 |