Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816230 | System for recycling fines to hollow electrode | John F. Bortnik, Donald A. Clayman | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816230 | System for recycling fines to hollow electrode | John F. Bortnik, Donald A. Clayman | 1989-03-28 |