| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Switzerland | 5 | |
| #3 | Austria | 1 | |
| #4 | Canada | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Spraying devices | |
| #2 | Pipes | |
| #3 | Non-positive-displacement pumps |
| # | Name | Total Patents |
|---|---|---|
| #1 | Perrot Heinrich | 9 |
| #2 | Heinrich Perrot | 5 |
| Publication | Filing date | Title |
|---|---|---|
| DE897933C | Wide beam sprinkler | |
| GB190411220A | Improvements in and relating to the Ventilating of Hats | |
| CA208773A | Compass |