| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 72 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Materials and metallurgy | |
| #3 | Machines | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Railway bodies | |
| #2 | Rail vehicle suspensions | |
| #3 | Alloys | |
| #4 | Couplings | |
| #5 | Railway brakes | |
| #6 | Vehicle wheels | |
| #7 | Unspecified technologies | |
| #8 | Dredging | |
| #9 | Railway shifting | |
| #10 | Metal tempering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Edmunds Glenn E | 44 |
| #2 | Dorsey Walter A | 13 |
| #3 | Gregg Alfred W | 10 |
| #4 | Frank Raymond H | 7 |
| #5 | Floyd Walter B | 6 |
| #6 | Alton Mitchell H | 5 |
| #7 | Cawthon Jr James L | 3 |
| #8 | Purkhiser Roy C | 2 |
| #9 | Bonney Jr John L V | 1 |
| #10 | Bonney John L V Jr | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2874428A | Method of hardening of sand cores and the like | |
| US2097970A | Wheel mounting | |
| US2097969A | Wheel mounting | |
| US2050937A | Brake actuating system | |
| US2097968A | Mine car and the like | |
| US2097967A | Mine car and the like | |
| US2097966A | Mine car | |
| US2056654A | Mine car | |
| US2060054A | Draft and buffer gearing | |
| US2118298A | Draft and buffer gearing | |
| US2060053A | Draft and buffer gearing | |
| US2056653A | Car brake mechanism | |
| US2060052A | Draft and buffer gearing | |
| US2060051A | Spring draft and buffer means | |
| US2057892A | Heat treatment of alloy glass machine castings | |
| US1993655A | Centrifugal casting method and apparatus | |
| US1996152A | Glass machine alloy | |
| US1967354A | Coupling | |
| US2056652A | Spring mounted car | |
| US2060050A | Combined spring bumper and spring drawbar |