Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4314130 | Method of making variably rifled tubes | Francis B. Jackson | 1982-02-02 |
| 4270690 | Method of forming variably rifled tubes | Francis B. Jackson | 1981-06-02 |
| 4212183 | Upsetting of tube ends | — | 1980-07-15 |