| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines | |
| #3 | Packaging and shipping | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Separating solids | |
| #2 | Unspecified technologies | |
| #3 | Transport or storage devices | |
| #4 | Machines for making railways |
| # | Name | Total Patents |
|---|---|---|
| #1 | Emery Frederick H | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US1297812A | Railway-crossover. | |
| US1220736A | Coal-picking apparatus. | |
| US1119586A | Coal-picking apparatus. | |
| US1066094A | Shaker-picker. | |
| CA146862A | Ore separator | |
| US1013648A | Shaker-picker. | |
| US1013647A | Slate-picker. | |
| US969048A | Slate-picking apparatus. | |
| CA105026A | Coal separator | |
| US784783A | Coal-separator. | |
| US755472A | Coal-separator. |