| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 8 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Transport | |
| #5 | Machine tools | |
| #6 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Rail vehicle suspensions | |
| #2 | Machines | |
| #3 | Unspecified technologies | |
| #4 | Venting or aerating devices | |
| #5 | Sound-producing devices | |
| #6 | Clutches and brakes | |
| #7 | Tools for connecting or disengaging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Clifford Roger W | 17 |
| #2 | Blunt James G | 2 |
| #3 | Nichols Philip J | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1911807A | Crosshead | |
| US1820558A | Whistle | |
| US1874449A | Lateral motion device | |
| US1941464A | Driving mechanism | |
| US1796561A | Truck for railroad vehicles | |
| US1832279A | Valve | |
| US1720665A | Throttle valve | |
| US1557982A | Exhaust-steam collector | |
| US1338489A | Throttle-valve | |
| CA329738A | Journal box lateral motion device | |
| CA314480A | Truck for railroad vehicles | |
| CA342021A | Driving mechanism | |
| CA258275A | Exhaust steam collector | |
| CA324010A | Throttle valve operating mechanism | |
| CA322771A | Steam whistle | |
| CA324009A | Throttle valve operating mechanism | |
| CA207297A | Throttle valve |