Patents per Year
Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4726962 | Alternating segment ring structure | Paul A. Siemers, Melvin Robert Jackson | 1988-02-23 | $13,656,000 |
| 4657823 | Alternating segment ring structure | Paul A. Siemers, Melvin Robert Jackson | 1987-04-14 | $12,445,000 |
| 4577431 | Wear resistant gun barrel and method of forming | Paul A. Siemers, Melvin Robert Jackson, Steven R. Duke, David P. Perrin, Ying Liu | 1986-03-25 | $5,413,000 |
| 4537742 | Method for controlling dimensions of RSPD articles | Paul A. Siemers, Melvin Robert Jackson | 1985-08-27 | $7,236,000 |