Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7475706 | Variable curvature tube and draw die therefor | William Hugh Frey | 2009-01-13 |
| 7290421 | Variable curvature tube and draw die therefor | William Hugh Frey | 2007-11-06 |
| 7251976 | Apparatus and method for the noncircular bending of tubes | Charles W. Wampler, II | 2007-08-07 |