| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 6 | |
| #2 | United States | 4 | |
| #3 | Ireland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Crop agriculture | |
| #2 | Harvesting |
| # | Name | Total Patents |
|---|---|---|
| #1 | William Aitkenhead | 3 |
| #2 | Aitkenhead William | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1091938A | Improvements in or relating to flexible harrows | |
| GB801905A | Improvements in or relating to harrows | |
| US2881845A | Harrow | |
| GB729661A | Improvements in or relating to harrows | |
| IE12304L | Harrows | |
| GB361645A | Improvements in or relating to flexible harrows or cultivators | |
| US1775711A | Agricultural machinery | |
| GB304867A | Improvements in digging or like agricultural machines | |
| GB254878A | Improvements in or relating to flexible harrows |