Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876430 | Preweld test method | Alexander Bogorad, Robert N. Harhigh | 1989-10-24 |
| 4849600 | Constant temperature welding method | Scott T. Demarest, Stephen H. Chu, John G. Leung | 1989-07-18 |