| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Basic materials chemistry | |
| #4 | Chemical engineering | |
| #5 | Thermal processes | |
| #6 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Gas, coke and tar production | |
| #5 | Separating solids | |
| #6 | Pumps | |
| #7 | Rotary-pistons | |
| #8 | Machines | |
| #9 | Windows or door furnishings | |
| #10 | Feeding fuel to combustion device |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schmidt John J | 3 |
| #2 | Hargis George R | 3 |
| #3 | Brice Albert L | 3 |
| #4 | Riddell William A | 3 |
| #5 | Raun Peter H | 1 |
| #6 | Frank Milton A | 1 |
| #7 | Lewis Basil C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1981003A | Method of manufacture of coke and producer gas | |
| US1944192A | Apparatus for producing coke and gas | |
| US1840533A | Power saw and drill | |
| US1947496A | Kiln apparatus | |
| US1783092A | Agitator for coal hoppers | |
| US1743916A | Liner for centrifugal pumps | |
| US1823098A | Gear pump | |
| US1735754A | Liner for centrifugal pumps | |
| US1744357A | Cylinder drain cock | |
| US1734028A | Automatic drain valve | |
| US1683918A | Separating or classifying machine | |
| US1647812A | Classifying or separating machine | |
| US1545608A | Centrifugal pump |