| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Measurement | |
| #3 | Machines | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Motor vehicles | |
| #2 | Vehicle tyre repairing | |
| #3 | Measuring length, angles and areas | |
| #4 | Unspecified technologies | |
| #5 | Foundations and excavations |
| # | Name | Total Patents |
|---|---|---|
| #1 | Friestedt Arthur A | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US2568542A | Nonskid tire | |
| US2275137A | Method of and means for determining the angular relation between wheel axes | |
| US2114444A | Steering controller | |
| US2063920A | Steering controller | |
| US2064600A | Steering controller | |
| US2060804A | Steering controller | |
| CA171174A | Tire rim tool | |
| US1162470A | Tire-rim contractor. | |
| CA113732A | Sheet piling | |
| US936529A | Sheet-piling. | |
| CA463775A | Method of and means for determining the angular relation between wheel axes |