Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975558 | System for control of weld arc development | Robert DeNale, Charles A. Zanis | 1990-12-04 |
| 4866236 | Flexible extendable backing shield for welding reactive metals | Robert DeNale, Luther A. Marsh | 1989-09-12 |
| 4599505 | Flexible trailing shield for welding reactive metals | Robert DeNale | 1986-07-08 |
| 4555614 | Weld metal cooling rate indicator system | Richard A. Morris, Charles A. Zanis | 1985-11-26 |