Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4616857 | Bi-directional self-retaining cylindrical surface seal | Daniel C. Woodman | 1986-10-14 |
| 4592426 | Upper termination with sliding sleeve seals | — | 1986-06-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4616857 | Bi-directional self-retaining cylindrical surface seal | Daniel C. Woodman | 1986-10-14 |
| 4592426 | Upper termination with sliding sleeve seals | — | 1986-06-03 |