| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Australia | 9 | |
| #2 | United Kingdom | 9 | |
| #3 | Denmark | 4 | |
| #4 | New Zealand | 3 | |
| #5 | Czechoslovakia | 2 | |
| #6 | Germany | 2 | |
| #7 | Austria | 1 | |
| #8 | Japan | 1 | |
| #9 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Harvesting | |
| #2 | Agricultural harvest processing | |
| #3 | Unspecified technologies | |
| #4 | Crop agriculture |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zweegers P W | 11 |
| #2 | Zweegers Petrus Wilhelmus | 8 |
| #3 | Petorasu Uiruherumu Tsubuiiger | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DK199080A | Hoestningsmaskine | |
| GB1445623A | Agricultural implements with coupling frames gaskets for plate heat excha g | |
| AU3568171A | Improvements in or relating to harvesting and ensilage cutting apparatus | |
| GB1334112A | Agricultural implements |