| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 19 | |
| #2 | France | 1 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Consumer goods | |
| #4 | Agriculture | |
| #5 | Measurement | |
| #6 | Engines, pumps and turbines | |
| #7 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Spraying devices | |
| #2 | Pipes | |
| #3 | Horticulture | |
| #4 | Goods for writing upon | |
| #5 | Electromechanical clocks | |
| #6 | Venting or aerating devices | |
| #7 | Hand carts | |
| #8 | Non-positive-displacement pumps | |
| #9 | Hats |
| # | Name | Total Patents |
|---|---|---|
| #1 | Perrot Heinrich | 14 |
| #2 | Heinrich Perrot | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE803384C | Wide beam sprinkler | |
| US1429625A | Compasses | |
| DE668268C | Connection elbow for hydrants for irrigation systems |