| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Agriculture | |
| #4 | Machine tools | |
| #5 | Mechanical elements | |
| #6 | Transport | |
| #7 | Furniture and games | |
| #8 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways | |
| #2 | Structural elements | |
| #3 | Unspecified technologies | |
| #4 | Animal catching | |
| #5 | Construction of bridges | |
| #6 | Toys | |
| #7 | Power supply for electric vehicles | |
| #8 | Percussive tools | |
| #9 | Protective garments | |
| #10 | Frames |
| # | Name | Total Patents |
|---|---|---|
| #1 | Walker Willis F | 16 |
| Publication | Filing date | Title |
|---|---|---|
| US2422509A | Third rail support | |
| US1814199A | Tie, joint and rail fastening combination | |
| US1568257A | Rail joint | |
| US1356417A | Railroad-tie | |
| US1250734A | Railway-tie. | |
| US1149800A | Necktie-holder. | |
| US1016309A | Metallic tie. | |
| US985381A | Railway-tie. | |
| US982452A | Railway-tie and fastener. | |
| US877387A | Safety-spring for steam and compressed-air hammers. | |
| US839972A | Rail tie and fastener. | |
| US737537A | Bridge construction. | |
| US727234A | Construction of walls and partitions for buildings or other structures. | |
| US670570A | Bridge. | |
| US651281A | Bridge. | |
| US650882A | Pick. |