| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | Spain | 4 | |
| #3 | Denmark | 3 | |
| #4 | Austria | 2 | |
| #5 | United Kingdom | 2 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Thermal processes | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Heat-exchange device details | |
| #3 | Aeroplanes | |
| #4 | Heat-exchanger without contact | |
| #5 | Clutches and brakes | |
| #6 | Steam condensers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Matteucci Raffaele | 10 |
| #2 | Raffaele Matteucci | 5 |
| Publication | Filing date | Title |
|---|---|---|
| GB191328052A | Improvements in Planetary Power-transmitting Mechanisms of the Frictional Type having Cylindrical Rolling Surfaces. | |
| US1190662A | Gearing. | |
| GB191319434A | Improvements in Epicyclic Friction Change-speed Gearing. |