| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 18 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Chemical engineering | |
| #3 | Transport | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Harvesting | |
| #2 | Planting | |
| #3 | Treating harvested food | |
| #4 | Crop agriculture | |
| #5 | Separating solids | |
| #6 | Construction of roads | |
| #7 | Motor vehicles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Holsten Hinrich | 8 |
| #2 | Wahlers Hinrich | 2 |
| #3 | Holsten Wilhelm | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE819163C | Potato harvester | |
| DE876331C | Potato harvester | |
| DE497586C | Impeller for potato harvesters | |
| DE425068C | Impeller for potato harvesters |