Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889392 | Advance/retreat cutting miner and method | Frank A. Delli-Gatti, Jr. | 1989-12-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889392 | Advance/retreat cutting miner and method | Frank A. Delli-Gatti, Jr. | 1989-12-26 |