| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways | |
| #2 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Willard George T | 17 |
| #2 | Preston Frederick A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2162365A | Railway tie plate and clip | |
| US2140344A | Tie plate and rail clip | |
| US2108460A | Tie plate and rail cushion retainer | |
| US2141891A | Tie plate and rail retaining clip | |
| US2094335A | Railway tie plate | |
| US2054352A | Railway tie plate | |
| US1971927A | Railway tie plate | |
| US2016565A | Railway tie plate | |
| US1942464A | Railway tie plate | |
| US1854497A | Railway tie plate | |
| CA337459A | Railway tie plate | |
| CA383370A | Railway tie plate and clip | |
| CA370942A | Rail plate and clip | |
| CA362507A | Railway tie plate | |
| CA391536A | Rail tie plate | |
| CA337458A | Railway tie plate | |
| CA339973A | Railway tie plate |