| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 3 | |
| #2 | Switzerland | 3 | |
| #3 | Spain | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Internal-combustion piston engines | |
| #3 | Cycle accessories |
| # | Name | Total Patents |
|---|---|---|
| #1 | Viratelle Marcel Narcisse | 6 |
| #2 | Marcel Narcisse Viratelle | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US990824A | Change-speed gearing. | |
| GB190726905A | An Improved Change-speed Gear more especially Designed for use on Self-propelled Vehicles. | |
| GB190707704A | Improvements in Change-speed Gear Chiefly Designed for use on Self-propelled Vehicles. |