| D282817 |
Positioner to support a gas cutting torch, a welding torch or the like |
David E. Johnson |
1986-03-04 |
| 4571478 |
Electrode drive and nozzle system for an automatic air carbon-arc cutting and gouging torch |
David E. Johnson, Larry A. Abersold |
1986-02-18 |
| D281250 |
Combined electrode drive and nozzle unit for an automatic air carbon-arc cutting and gouging torch |
David E. Johnson, Larry A. Aebersold |
1985-11-05 |
| 4540225 |
Swivel cable coupling for an air carbon-arc cutting and gouging torch |
David E. Johnson |
1985-09-10 |
| 4527037 |
Electrode drive and nozzle system for an automatic air carbon-arc cutting and gouging torch |
David E. Johnson, Larry A. Aebersold |
1985-07-02 |
| D273097 |
All position tractor for mounting a tool such as a welding, cutting or gouging torch |
David E. Johnson, William J. Coughlin |
1984-03-20 |
| 4422384 |
All position tractor |
David E. Johnson, William J. Coughlin |
1983-12-27 |
| D271290 |
Heavy duty machine carriage |
William J. Coughlin, David E. Johnson |
1983-11-08 |
| 4330109 |
Heavy duty carriage assembly |
William J. Coughlin, David E. Johnson |
1982-05-18 |
