| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 273 | |
| #2 | Canada | 142 | |
| #3 | United Kingdom | 3 | |
| #4 | France | 2 | |
| #5 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Couplings | |
| #2 | Rail vehicle suspensions | |
| #3 | Unspecified technologies | |
| #4 | Railway brakes | |
| #5 | Nails | |
| #6 | Shafts | |
| #7 | Unspecified technologies | |
| #8 | Making forged metal products | |
| #9 | Vehicle wheels | |
| #10 | Locomotives |
| # | Name | Total Patents |
|---|---|---|
| #1 | Barrows Donald S | 202 |
| #2 | Kadel Byers W | 58 |
| #3 | Couch Glenn F | 47 |
| #4 | Richards Willard F | 14 |
| #5 | Drenning Percy R | 12 |
| #6 | Anderson Gustaf A | 11 |
| #7 | Akitt Norman B | 10 |
| #8 | Martin Mark H | 8 |
| #9 | Cyrus Hankins | 7 |
| #10 | Townsend Donald L | 6 |
| Publication | Filing date | Title |
|---|---|---|
| US2059963A | Railway vehicle | |
| US2028039A | Journal box | |
| US1963914A | Railway truck | |
| US1988427A | Cushioning mechanism | |
| US2032353A | Draft rigging | |
| US2006292A | Draft rigging | |
| US2008683A | Railway truck | |
| US2053939A | Draft rigging | |
| US2025726A | Draft rigging | |
| US2015026A | Railway truck | |
| GB375740A | Improvements in spring suspension mechanism for railway rolling stock | |
| US2047192A | Railway truck | |
| US1972857A | Leaf spring | |
| US2043091A | Journal box | |
| US2059962A | Draft rigging | |
| US2015025A | Railway vehicle | |
| US1998445A | Journal box | |
| US2039270A | Draft rigging | |
| US1940042A | Journal box | |
| US2055473A | Draft rigging |