| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 8 | |
| #2 | Spain | 2 | |
| #3 | United States | 2 | |
| #4 | Austria | 1 | |
| #5 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Vehicle brake control systems | |
| #2 | Vehicle drive control systems | |
| #3 | Unspecified technologies | |
| #4 | Cyclically operating valves |
| # | Name | Total Patents |
|---|---|---|
| #1 | Otto J Badertscher | 8 |
| #2 | Badertscher Otto J | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US1760624A | Servo-brake mechanism | |
| US1721290A | Vacuum servo-brake for motor-driven vehicles | |
| CA281208A | Servo-brake |