| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 27 | |
| #2 | Canada | 8 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Planting | |
| #2 | Crop agriculture | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Mechanical control devices | |
| #6 | Measuring volume |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hyland William A | 13 |
| #2 | Erdman Theodore J | 8 |
| #3 | Brunt Willard A Van | 7 |
| #4 | John Schaeffer | 6 |
| #5 | Borngraeber Royce R | 2 |
| #6 | Schaeffer John | 2 |
| #7 | Schnell Ernst E | 1 |
| #8 | Starr John H | 1 |
| #9 | Nelson Nicholas R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2429552A | Cultivator lift mechanism | |
| US2418937A | Soil pulverizer and seeder | |
| US2370468A | Steering hitch mechanism | |
| US2391975A | Grain drill | |
| US2378635A | Seeding attachment | |
| US2364296A | Trash shield | |
| US2323044A | Grain drill | |
| US2336099A | Clutch mechanism | |
| US2308081A | Grain drill | |
| US2355728A | Fertilizer distributor | |
| US2032085A | Cultivator | |
| US2029127A | Power lift clutch mechanism | |
| US1982862A | Cultivator | |
| US1984705A | Cultivator | |
| US1923259A | Grain drill | |
| US1872066A | Hitch connection for plows with seeders | |
| US1944672A | Grain drill | |
| US1650808A | Machine for sowing fertilizers | |
| US1506820A | Pressure-regulating mechanism | |
| US1751951A | Grain drill |