Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6938402 | Mowing blades having an impact energy absorbing structure | Jack E. Arfstrom, John W. Hopkins | 2005-09-06 |
| D487098 | Blade | Jack E. Arfstrom, John W. Hopkins | 2004-02-24 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6938402 | Mowing blades having an impact energy absorbing structure | Jack E. Arfstrom, John W. Hopkins | 2005-09-06 |
| D487098 | Blade | Jack E. Arfstrom, John W. Hopkins | 2004-02-24 |