Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8803032 | Hybrid powered welder | William T. Matthews, Frank M. Stupczy | 2014-08-12 |
| 8080761 | Hybrid powered welder | William T. Matthews, Frank M. Stupczy | 2011-12-20 |
| 7259355 | Engine welder with full access | David J. Bender, David E. Osicki | 2007-08-21 |
| 7105774 | Integrated engine welder and electric compressor | David J. Bender | 2006-09-12 |
| 6992265 | Integrated engine welder and electric compressor | David J. Bender | 2006-01-31 |
| 4314195 | Solid state control for motor-generator welder | — | 1982-02-02 |