| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 18 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Guiding railway traffic | |
| #2 | Railway bodies | |
| #3 | Unspecified technologies | |
| #4 | Rail vehicle suspensions | |
| #5 | Animal care |
| # | Name | Total Patents |
|---|---|---|
| #1 | Peter Swanson | 18 |
| #2 | Carlson Axel W | 2 |
| #3 | Axel Carlson | 2 |
| #4 | Roy Baxtrum | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1885961A | Railroad switch stand bog | |
| US1907611A | Switch stand lock | |
| US1974381A | Fishing tackle | |
| US1835442A | Railroad switch stand dog | |
| US1812179A | Switch stand lock | |
| US1773326A | Switch-stand lock | |
| US1749198A | Switch-stand lock | |
| US1786582A | Gravity lock | |
| US1731029A | Switch target | |
| US1647484A | Gravity lock | |
| US1599501A | Switch signal | |
| US1557626A | Railroad switch | |
| US1466212A | Auxiliary car step | |
| US1443057A | Auxiliary car step | |
| US1425149A | Auxiliary car step | |
| US1400577A | Auxiliary car-step | |
| US1393716A | Auxiliary arch-bar | |
| US1353364A | Auxiliary car-step |