Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6719050 | Method and apparatus for removing solid material from a well using a rotary pump | — | 2004-04-13 |
| 4410040 | Corrosive environment tension packer | Marvin R. Kruschke, Sr. | 1983-10-18 |
| 4344651 | Corrosive environment tension packer | Marvin R. Kruschke, Sr. | 1982-08-17 |