Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667706 | Apparatus and method for laser welding the inner surface of a tube | William E. Pirl, Wesley G. Pope, William G. Cole, Frank X. Ponko | 1997-09-16 |
| 5182429 | System and method for laser welding the inner surface of a tube | William E. Pirl, Edward H. Smith, Charles H. Roth, Jr., John J. Anderson | 1993-01-26 |