| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | United States | 3 | |
| #3 | Germany | 2 | |
| #4 | France | 2 | |
| #5 | Canada | 1 | |
| #6 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Mechanical elements | |
| #3 | Transport | |
| #4 | Machine tools | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Measuring speed and acceleration | |
| #2 | Gearing | |
| #3 | Unspecified technologies | |
| #4 | Vehicle wheels | |
| #5 | Nails | |
| #6 | Tools for connecting or disengaging | |
| #7 | Vehicle transmission mounting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cassel Gunnar Elias | 3 |
| #2 | Leffler Artur | 2 |
| #3 | Elias Cassel Gunnar | 1 |
| #4 | Artur Leffler | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB215753A | Improvements in speed indicating apparatus for self-propelled vehicles | |
| GB221449A | Improvements in speed indicating apparatus for motor vehicles | |
| US1508644A | Speed-indicating apparatus | |
| GB202620A | Improvements in speed indicating apparatus for motor vehicles | |
| GB155559A | Improvements in means for locking nuts | |
| US1296162A | Variable-speed gearing. | |
| US1229712A | Traction-wheel. | |
| CA245013A | Speed indicating apparatus |