Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8820363 | Wedge type plug and method of plugging a lateral line | Richard C. Polivka, Kyle Costa, Keith B. Oxner, Cory Wayne Husemann, Clayton Muenchmeyer | 2014-09-02 |
| 8015695 | Reinstatement of an existing connection in a lined conduit | Richard C. Polivka, Keith B. Oxner | 2011-09-13 |