| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 27 | |
| #2 | Canada | 12 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Measurement | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Rail vehicle suspensions | |
| #2 | Couplings | |
| #3 | Railway brakes | |
| #4 | Vehicle suspension arrangements | |
| #5 | Clutches and brakes | |
| #6 | Aeroplanes | |
| #7 | Unspecified technologies | |
| #8 | Mountings for cannons and pistols | |
| #9 | Mechanically-driven clocks | |
| #10 | Analysing materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Pierce Raymond C | 39 |
| Publication | Filing date | Title |
|---|---|---|
| US2769631A | Axle assembly | |
| US2713484A | Torsion spring axle mounting | |
| US2688480A | Axle mounting | |
| US2646894A | Draft gear | |
| US2765881A | Brake rotor | |
| US2612038A | Spring testing machine | |
| US2483430A | Shock absorber | |
| US2483429A | Shock absorber | |
| US2485508A | Snubbed truck | |
| US2485013A | Snubbed truck | |
| US2434583A | Snubbed quick wheel change truck | |
| US2437359A | Snubbed truck | |
| US2394872A | Truck | |
| US2479863A | Snubber | |
| US2386907A | Brake | |
| US2380902A | Car truck | |
| US2372984A | Brake disk | |
| US2359788A | Brake arrangement | |
| US2307236A | Draft gear | |
| US2272644A | Draft gear |