| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 20 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machine tools | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways | |
| #2 | Rolling metal | |
| #3 | Punching metal | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bell Edwin H | 27 |
| #2 | Stephen Boyce William | 1 |
| #3 | Minna Kruttschnitt E | 1 |
| #4 | Boyce William S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1945174A | Tie plate | |
| US1951644A | Tie plate | |
| US1669441A | Tie plate | |
| US1669440A | Railway tie | |
| US1604961A | Shim for tie plates | |
| US1610733A | Tie plate | |
| US1604960A | Tie plate | |
| US1563283A | Tie plate | |
| US1219224A | Tie-plate. | |
| US1202353A | Tie-plate. | |
| US1106770A | Process for manufacturing tie-plates. | |
| US1089389A | Process for manufacturing tie-plates. | |
| US1044853A | Process of manufacturing tie-plates. | |
| US1001921A | Tie-plate. | |
| US948127A | Tie-plate. | |
| US945364A | Metallic railway-tie. | |
| US938109A | Process of manufacturing tie-plates. | |
| CA113568A | Tie plate manufacture | |
| CA114162A | Tie plate | |
| CA113228A | Tie plate |