| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 25 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Machine tools | |
| #4 | Materials and metallurgy | |
| #5 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Rail vehicle suspensions | |
| #2 | Unspecified technologies | |
| #3 | Railway bodies | |
| #4 | Punching metal | |
| #5 | Making forged metal products | |
| #6 | Casting metal | |
| #7 | Unspecified technologies | |
| #8 | Earth drilling |
| # | Name | Total Patents |
|---|---|---|
| #1 | Doerr Harry E | 11 |
| #2 | Chiles George S | 6 |
| #3 | Mccullough Paul J | 5 |
| #4 | Dreibuss Harry C | 4 |
| #5 | Leck Walter W | 3 |
| Publication | Filing date | Title |
|---|---|---|
| US1878473A | Bolster end construction | |
| US1971768A | Truck bolster | |
| US1902805A | Truck side frame | |
| US1781106A | Truck bolster | |
| US1851714A | Sucker rod connection | |
| US1757323A | Car support | |
| US1757937A | Shim-holding device for car trucks | |
| US1872680A | Ladder for freight cars | |
| US1813114A | Grab iron or ladder rung | |
| US1757936A | Car truck | |
| US1724032A | Method of making sucker rods | |
| US1872427A | Car journal box | |
| US1757765A | Truck bolster | |
| US1713138A | Rod-straightening machine | |
| US1735239A | Freight-car truck or tender truck | |
| US1688856A | Car-truck side frame | |
| US1652002A | Car-truck side frame | |
| US1618016A | Rolled-steel chill | |
| US1555561A | Railway-car truck | |
| US1414554A | Pedestal truck side frame |