| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways | |
| #2 | Guiding railway traffic |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bradley Frank B | 4 |
| #2 | Elfborg Henry G | 2 |
| #3 | Bender William | 1 |
| #4 | Hoffmann Paul | 1 |
| #5 | Calvert Thomas E | 1 |
| #6 | Paul Hoffman | 1 |
| #7 | Bradley Frank Backus | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1443411A | Articulated railway crossing | |
| US1273134A | Switch-stand. | |
| CA171243A | Insulated switch rod | |
| US1191149A | Insulated switch-rod. | |
| US1187130A | Switch-rod. | |
| US1033400A | Switch-point. | |
| US1044508A | Railway-frog. | |
| US1037880A | Railway-frog. | |
| US850207A | Switch-lock. | |
| US715750A | Heel-riser for railway-frogs. | |
| US651413A | Switch-rod. |