| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | Italy | 2 | |
| #4 | Germany | 1 | |
| #5 | Mexico | 1 | |
| #6 | Sweden | 1 | |
| #7 | United States | 1 | |
| #8 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Unspecified technologies | |
| #3 | Making gears or toothed racks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rouverol William Spence | 6 |
| #2 | Rouverol W S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4108017A | Standard-pitch gearing | |
| GB868827A | Variable speed transmission |