| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 252 | |
| #2 | United Kingdom | 6 | |
| #3 | France | 5 | |
| #4 | Germany | 3 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Electrical machinery and energy | |
| #5 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Couplings | |
| #2 | Unspecified technologies | |
| #3 | Nails | |
| #4 | Unspecified technologies | |
| #5 | Electrically-conductive connections | |
| #6 | Foundry moulding |
| # | Name | Total Patents |
|---|---|---|
| #1 | Regan William J | 55 |
| #2 | William Kelso | 47 |
| #3 | Milliken Isaac H | 31 |
| #4 | George Jr Enoch | 31 |
| #5 | Kelso Joseph | 25 |
| #6 | Mcconway William Jr | 23 |
| #7 | Kelso William | 20 |
| #8 | Buhoup Harry C | 17 |
| #9 | Mcconway Jr William | 11 |
| #10 | Matthews William R | 7 |
| Publication | Filing date | Title |
|---|---|---|
| US1919668A | Coupler operating mechanism | |
| US2006686A | Coupler carrier mechanism | |
| US1881662A | Car coupler | |
| US1968706A | Car coupler | |
| US1883315A | Car coupler | |
| US2003221A | Railway draft appliance | |
| US1960649A | Car coupler | |
| US1882899A | Car coupler | |
| US1869713A | Car coupler | |
| US1797650A | Car-coupler mechanism | |
| US1883314A | Radial coupler mechanism | |
| GB326575A | Improvements in and relating to railway car couplers | |
| US1968705A | Radial coupler mechanism | |
| US1908542A | Railway draft appliance | |
| US1908541A | Draft appliance for railway cars | |
| US1825908A | Car coupler mechanism | |
| US1801924A | Car-coupler mechanism | |
| US1783655A | Car-coupler mechanism | |
| US1779321A | Uncoupling device | |
| US1758974A | Draft appliance for railway vehicles |