| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 17 | |
| #2 | United Kingdom | 5 | |
| #3 | United States | 5 | |
| #4 | Switzerland | 4 | |
| #5 | Austria | 3 | |
| #6 | Germany | 2 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Electrical machinery and energy | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Vehicle brake control systems | |
| #2 | Electric switches | |
| #3 | Steam traps | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Freins Lipkowski Societe Gener | 4 |
| #2 | Tasker Vernon C | 2 |
| #3 | Lipkowski Joseph | 2 |
| #4 | Likowski Joseph | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE369524C | Graduated valve for air brakes | |
| US767318A | Air-brake triple valve. | |
| US766915A | Air-brake accelerator. | |
| US727394A | Air-brake. | |
| US724302A | Engineer's air-brake-controlling valve. | |
| US690065A | Compressed-air brake. | |
| GB189917647A | Improvements in Apparatus for use in connection with Compressed-air Brakes for Railway and like Vehicles. | |
| GB189716892A | Improvements in Continuous Automatic Air Brakes for Railway Vehicles. | |
| DE368207C | Graduated valve for air brakes |