| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 44 | |
| #2 | United States | 3 | |
| #3 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Electrical machinery and energy | |
| #3 | Mechanical elements | |
| #4 | Textiles and paper |
| # | Technology | |
|---|---|---|
| #1 | Handling thin material | |
| #2 | Magnets and transformers | |
| #3 | Gearing | |
| #4 | Warping, beaming and leasing | |
| #5 | Dynamo-electric machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Leeson Joseph Robert | 43 |
| #2 | Helm Max | 2 |
| #3 | Leeson Joseph-Robert | 1 |
| #4 | Wolf Ernest A De | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1091046A | Coil for electrical purposes and method of producing same. | |
| US1134268A | Winding-machine. | |
| US1080830A | Electrical coil and method of winding same. |