Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4648868 | Apparatus for controlling flow and pressure measurement | Martha K. Hardwick, Kelly A. Pike, George D. Evans, Jacob J. Norman | 1987-03-10 |
| 4528896 | Dynamic seals for gas and oil well swabs | — | 1985-07-16 |