| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Measurement | |
| #4 | Electrical machinery and energy | |
| #5 | Control | |
| #6 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Measuring speed and acceleration | |
| #2 | Clutches and brakes | |
| #3 | Vehicle drive control systems | |
| #4 | Gearing | |
| #5 | Vehicle signalling and lighting | |
| #6 | Alarm systems | |
| #7 | Measuring volume | |
| #8 | Unspecified technologies | |
| #9 | Motor vehicles | |
| #10 | Electric switches |
| # | Name | Total Patents |
|---|---|---|
| #1 | Edelblut Johann | 8 |
| #2 | Johann Edelblut | 2 |
| #3 | Gunther Ziegler | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2975875A | Automatic clutch device | |
| GB819563A | Improvements in or relating to clutch devices for motor vehicles | |
| GB747052A | Improvements in or relating to devices for indicating the condition of rest or movement of a rotatable shaft | |
| US2722680A | Devices for indicating the condition of rest or movement of a rotatable shaft |