Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5518036 | Multi-layer plastic pipe and method and apparatus for extrusion thereof | Jimmie G. DeMasters | 1996-05-21 |
| 5431866 | Method and apparatus for positioning a pipe | Jimmie G. DeMasters | 1995-07-11 |