Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872249 | Tool support and guide system for repair of boiler tube panels and process for carrying out repair using same | Cory J. Silber, William H. Astle | 1989-10-10 |
| 4829860 | Segmented sliding bearing arrangement for portable lathe | — | 1989-05-16 |
| 4823655 | Multi-speed drive system for a portable lathe | — | 1989-04-25 |
| 4802278 | Gear driven tube cutter | Neil Pfafman, Cory J. Silber | 1989-02-07 |