| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Rail vehicle suspensions | |
| #2 | Unspecified technologies | |
| #3 | Machines | |
| #4 | Cyclically operating valves | |
| #5 | Locomotives | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Shannon Ellwood M | 14 |
| #2 | Mcmenamin James F | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2243656A | Power reverse gear | |
| US2038610A | Roller bearing trailer truck | |
| US2072410A | Power reverse gear | |
| US2071363A | Power reverse gear | |
| US1863506A | Six-wheel tender truck | |
| US1888183A | Locomotive trailer truck | |
| US1793338A | Engine truck | |
| US1831722A | Engine truck | |
| US1789199A | Engine truck | |
| US1661053A | Mallet locomotive | |
| US1621339A | Mallet locomotive | |
| CA365781A | Power reverse gear | |
| CA365780A | Power reverse gear | |
| CA354202A | Power reverse gear |