Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9441772 | Method and apparatus for protecting pipe installed underground | Daniel E. Pajak, Andrew P. Boos | 2016-09-13 |
| 9194529 | Method and apparatus for protecting drainage pipe installed underground | Daniel E. Pajak, Andrew P. Boos | 2015-11-24 |
| 9140391 | Coupler method and apparatus for installing pipe with a protective cover into borehole | Daniel E. Pajak, Andrew P. Boos | 2015-09-22 |