| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Materials and metallurgy | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Rail vehicle suspensions | |
| #2 | Motor vehicles | |
| #3 | Casting metal | |
| #4 | Cyclically operating valves |
| # | Name | Total Patents |
|---|---|---|
| #1 | Westlake Charles T | 16 |
| #2 | Frede Charles F | 1 |
| #3 | Howard Karl S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1424788A | Electric truck | |
| CA195614A | Trailer truck | |
| CA195306A | Railway car brake | |
| CA194239A | Internal combustion engine | |
| US1291316A | Internal-combustion engine. | |
| CA173679A | Truck for locomotive trailers | |
| US980719A | Art of casting. | |
| US819480A | Car-truck. | |
| US781115A | Car-bolster. | |
| CA75657A | Car bolster spring seat | |
| CA75654A | Car transom | |
| CA75655A | Car bolster | |
| US692569A | Car-bolster. | |
| US692568A | Car-bolster. | |
| US692567A | Swinging spring-seat for car-bolsters. | |
| US692566A | Car-transom. |