Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6875942 | Methods and systems for fabricating spiral welded cylinders | Stephen A. Coughlin, Robert Shaner, Michael R. Williams | 2005-04-05 |
| 6717093 | Methods and systems for fabricating spiral welded cylinders | Stephen A. Coughlin, Robert Shaner, Michael R. Williams | 2004-04-06 |