| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 7 | |
| #2 | Germany | 2 | |
| #3 | United Kingdom | 1 | |
| #4 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Transport | |
| #4 | Electrical machinery and energy | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Supplying combustion engines | |
| #2 | Vehicle wheels | |
| #3 | Gearing | |
| #4 | Controlling combustion engines | |
| #5 | Clutches and brakes | |
| #6 | Dynamo-electric machines | |
| #7 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hall John William | 7 |
| #2 | Baynes Cyril | 2 |
| #3 | Stover Mark E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB188682A | Improvements in or relating to magnetic clutches and the like | |
| US669269A | Mechanism for converting motion. |