| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 8 | |
| #2 | United States | 2 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 | |
| #5 | United Kingdom | 1 | |
| #6 | Netherlands | 1 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Mechanical elements | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Planting | |
| #2 | Crop agriculture | |
| #3 | Gearing | |
| #4 | Motor vehicles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Weitz Otto | 2 |
| #2 | Wietz O | 1 |
| #3 | Otto Weitz | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA932592A | Sowing device with pneumatic seed separator | |
| US3425715A | Hydraulically controlled hitch |