Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666275 | Bridge plug | Kevin T. Berscheidt, Don S. Folds, Ronald L. Hinkie, Loren Swor, Brian K. Wilkinson | 2003-12-23 |
| 6655658 | Plug valve assembly and fluid flow control method with improved low pressure sealing | Gregory Allen Thomas Hall | 2003-12-02 |
| 6602916 | Foaming apparatus and method | Steven R. Grundmann | 2003-08-05 |