Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842077 | Disk harrow standard for support beams of different cross sections | James Franklin Bierl | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842077 | Disk harrow standard for support beams of different cross sections | James Franklin Bierl | 1989-06-27 |