| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 2 | |
| #2 | France | 2 | |
| #3 | United Kingdom | 2 | |
| #4 | Austria | 1 | |
| #5 | Canada | 1 | |
| #6 | Switzerland | 1 | |
| #7 | Spain | 1 | |
| #8 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Engines, pumps and turbines | |
| #3 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Textile treatments | |
| #2 | Non-positive-displacement pumps | |
| #3 | Dyeing textiles |
| # | Name | Total Patents |
|---|---|---|
| #1 | Drago Leo | 3 |
| #2 | Leo Drago | 2 |
| #3 | Drageo Leo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES294765A1 | Apparatus for the continuous dyeing of textile fiber materials with a dye liquor | |
| GB1040480A | Process for the continuous wet-treatment of textile ribbons or the like | |
| GB989832A | Improvements in or relating to flow-reversal axial-flow pumps | |
| US3165064A | Flow-reversal propeller pump | |
| CA768537A | Process for the continuous wet-treatment of textile ribbons or the like |