| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Denmark | 7 | |
| #2 | United Kingdom | 2 | |
| #3 | Austria | 1 | |
| #4 | Germany | 1 | |
| #5 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Harvesting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johannesen Erwin | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB753956A | Improvements in agricultural rakes and in tractor-connecting and operating means therefor | |
| GB720247A | Field rake | |
| DE958067C | Tractor-mounted field rake |