Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8066499 | Dual gland air inversion and steam cure of cured in place liners | Franklin Driver, Steve Hirtz, Richard C. Polivka, James H. Blasczyk, Neil T. Birchler | 2011-11-29 |
| 8038913 | Installation of cured in place liners with dual gland air inversion and steam cure apparatus | Franklin Driver, Steve Hirtz, Richard C. Polivka, James H. Blasczyk, Neil T. Birchler | 2011-10-18 |
| 7866968 | Reusable inversion sleeve assembly for inversion of cured in place liners | Franklin Driver, Neil T. Birchler, Richard C. Polivka, Weiping Wang | 2011-01-11 |