Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D960558 | Pipe cleaning keychain | — | 2022-08-16 |
| 9903489 | Pneumatic pressure relief test plug | Steven R. Cole | 2018-02-27 |
| 8256467 | Plug with pressure release valve | Steven R. Cole | 2012-09-04 |
| 8042576 | Mechanical clean-out test plug | Stephen Peterson | 2011-10-25 |
| 7597118 | Pneumatic pressure relief test plug | Stephen Peterson | 2009-10-06 |
| 7464727 | Clean-out repair plug | Steven Shane Peterson | 2008-12-16 |
| 6086132 | Sun spot | David N. Caldwell | 2000-07-11 |
| 4572228 | Connector valve assembly for inflatable packer device | Dale K. Nelson, Allen D. Mathison | 1986-02-25 |