Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4329872 | High pressure hydraulic testing packer | Frank C. Ball | 1982-05-18 |
| 4322969 | Gas pressure relieving hydrostatic tester | Frank C. Ball | 1982-04-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4329872 | High pressure hydraulic testing packer | Frank C. Ball | 1982-05-18 |
| 4322969 | Gas pressure relieving hydrostatic tester | Frank C. Ball | 1982-04-06 |