Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4308920 | Ground working implement wherein forward frame portion raised before frame support engages ground | James A. McElwain | 1982-01-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4308920 | Ground working implement wherein forward frame portion raised before frame support engages ground | James A. McElwain | 1982-01-05 |