| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 37 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Transport | |
| #3 | Engines, pumps and turbines | |
| #4 | Machines | |
| #5 | Machine tools | |
| #6 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Machines for making railways | |
| #2 | Guiding railway traffic | |
| #3 | Dredging | |
| #4 | Unspecified technologies | |
| #5 | Non-positive-displacement pumps | |
| #6 | Making forged metal products | |
| #7 | Rail vehicle suspensions | |
| #8 | Shafts |
| # | Name | Total Patents |
|---|---|---|
| #1 | Andersen Oscar W | 11 |
| #2 | Strom Eugene N | 8 |
| #3 | August Enstrom | 4 |
| #4 | Black Edward S | 4 |
| #5 | Powell Edward W | 3 |
| #6 | Cornell Arthur M | 2 |
| #7 | Anderson Oscar W | 2 |
| #8 | Llewellyn Samuel G | 1 |
| #9 | Erikson Mauritz L | 1 |
| #10 | Fundom Earl H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2049266A | Side bearing | |
| US2013499A | Sealing means | |
| US1914104A | Dipper construction | |
| US1908883A | Dipper | |
| US1906843A | Side bearing | |
| US1920703A | Dipper front | |
| US1958178A | Method of making channel forgings | |
| US1829439A | Switch point-rail | |
| US1947148A | Pump | |
| US1818885A | Split-switch structure | |
| US1785454A | Railway-switch structure | |
| US1816522A | Dipper bucket | |
| US1770231A | Guard-rail structure | |
| US1828383A | Dashpot mechanism | |
| US1743662A | Railway-track construction | |
| US1779204A | Abutment-equipped rod | |
| US1815820A | Dipper tooth | |
| US1815819A | Dipper tooth | |
| US1710336A | Railway switch | |
| US1710335A | Railway switch |