Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4502179 | Apparatus for collecting process generated fume and/or slag | William J. Coughlin, Perry J. Rieppel | 1985-03-05 |
| 4426566 | Apparatus for collecting process generated fume and/or slag | William J. Coughlin, Perry J. Rieppel | 1984-01-17 |
| 4388514 | Method for collecting process generated fume and/or slag | William J. Coughlin, Perry J. Rieppel | 1983-06-14 |
| 4260867 | Electrode drive and nozzle system for automatic air-carbon arc cutting and gouging torch | William J. Coughlin, Jerry R. Hummel | 1981-04-07 |
| D258193 | Air-carbon arc cutting and gouging torch | — | 1981-02-10 |
| 4218605 | Air-carbon arc cutting and gouging torch | Jerry R. Hummel | 1980-08-19 |