| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Thermal processes | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Rail vehicle suspensions | |
| #2 | Supplying fuel to combustion device | |
| #3 | Locomotives | |
| #4 | Machines | |
| #5 | Steam generation | |
| #6 | Machines for making railways | |
| #7 | Lubricating |
| # | Name | Total Patents |
|---|---|---|
| #1 | Barrett Charles D | 13 |
| #2 | Whitehead Charles R | 4 |
| #3 | Whitehesd Charles R | 1 |
| #4 | King Albert O | 1 |
| #5 | Mayers John E | 1 |
| #6 | Barrett Charles D Jr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2613075A | Bolster spring and snubber means for railway car trucks | |
| US2446506A | Snubbed bolster car truck | |
| US2521142A | Locomotive | |
| US2417674A | Railway car truck | |
| US2417343A | Steam locomotive boiler | |
| US2287963A | Spring support for railway trucks | |
| US2243411A | Springing for railway trucks | |
| US2199907A | Springing for railway trucks | |
| US2145913A | Rail joint | |
| US2065992A | Friction unit for railway car trucks | |
| US1913530A | Locomotive smoke box | |
| US1653537A | Smoke box for locomotives | |
| US1386678A | Balanced throttle-valve |