Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889324 | Exothermic welding apparatus and method | Denis A. Brosnan, James E. Whetsel, Richard E. Singer, Mark V. Samas, Michael D. Amos | 1989-12-26 |
| 4885452 | Exothermic welding and method | Michael D. Amos, George F. Kub, Jr. | 1989-12-05 |
| 4881677 | Exothermic welding apparatus including a baffle cover assembly | Michael D. Amos, Denis A. Brosnan, Mark V. Samas, Richard E. Singer, James E. Whetsel | 1989-11-21 |
| 4879452 | Exothermic welding apparatus and method | Michael D. Amos | 1989-11-07 |