| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 21 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Mechanical elements | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Crop agriculture | |
| #2 | Vehicle wheels | |
| #3 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Louis Brenneis | 8 |
| #2 | Furrer Samuel S | 6 |
| #3 | Stewart James S | 4 |
| #4 | Ward Claton E | 2 |
| #5 | Harris Ford W | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1914731A | Spring tooth for harrows | |
| US1907946A | Rotary harrow | |
| US1919080A | Offset disk harrow | |
| US1831042A | Turning device for offset harrows | |
| US1831041A | Spring tooth harrow | |
| US1885410A | Bearing construction | |
| US1830993A | Centralizing draft connection for agricultural vehicles | |
| US1843275A | Multiple hitch for multiple-gang harrows | |
| US1838176A | Power lift harrow | |
| US1861741A | Disk harrow | |
| US1700358A | Disk harrow | |
| US1781171A | Disk harrow | |
| US1621622A | Disk harrow | |
| US1620066A | Disk harrow | |
| US1581165A | Wheel construction | |
| US1591414A | Agricultural implement with detachable working member | |
| US1649336A | Disk harrow | |
| US1586236A | Power lift for agricultural vehicles and implements | |
| US1685478A | Cultivator | |
| US1421048A | Tandem disk harrow |