| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Clutches and brakes | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rambausek Hugo | 8 |
| #2 | Hugo Rambausek | 2 |
| #3 | Bergmann Alfred | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB954356A | Improvements in or relating to change speed gears | |
| GB917675A | Improvements in or relating to change-speed gears | |
| US2991661A | Multi-speed transmission with only two overrunning clutches, particularly for vehicles | |
| GB440541A | Friction clutch for gear changing mechanism | |
| US2077058A | Friction coupling for change gears |