Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4711013 | Method for removing injectable material from a packing cylinder | Daniel E. Hannah, Clifford F. Bea, Martin J. Hannah | 1987-12-08 |
| 4671543 | Ball and socket type joint for use between adjacent sections of a fluid conduit and method of manufacturing same | — | 1987-06-09 |