| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 6 | |
| #2 | Spain | 3 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Foods and drinks | |
| #2 | Chemical engineering | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Foods | |
| #2 | Drying solid materials by removing liquid | |
| #3 | Food preservation | |
| #4 | Installations for obtaining water | |
| #5 | Special foods |
| # | Name | Total Patents |
|---|---|---|
| #1 | Adrien Lucien Dufour | 5 |
| #2 | Lucien Dufour Adrien | 2 |
| #3 | Adrien Dufour | 1 |
| #4 | Dufour Adrien Lucien | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1165761A | Improvements in Drying Ovens | |
| ES300509A3 | Improvements in machines to clean vegetables in large amounts (Machine-translation by Google Translate, not legally binding) | |
| ES300508A3 | Improvements in machines to cut legumbre (Machine-translation by Google Translate, not legally binding) | |
| ES300507A3 | Improvements in machines to cut and dispatch tomatoes (Machine-translation by Google Translate, not legally binding) |