| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 7 | |
| #2 | United States | 7 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Chemical engineering | |
| #3 | Machines | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Crop agriculture | |
| #2 | Harvesting | |
| #3 | Separating solids | |
| #4 | Milling | |
| #5 | Street cleaning |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fahrenholz Harley D | 14 |
| Publication | Filing date | Title |
|---|---|---|
| US7028460B1 | Rock windrower | |
| USRE34458E | Screening machine | |
| CA1333584C | Screening machine | |
| US4896835A | Screening machine | |
| US4345655A | Rock picker with storage conveyors | |
| US4315546A | Double roll rock windrower | |
| US4167975A | Beach cleaning apparatus | |
| CA978751A | Rock picker with high lift dump box | |
| US2725700A | Rock picker | |
| CA528985A | Rock picker | |
| CA824493A | Slip clutch | |
| CA695388A | Rock windrower |