| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Civil engineering | |
| #3 | Machines | |
| #4 | Transport | |
| #5 | Basic materials chemistry | |
| #6 | Furniture and games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Emil Krauss Friedrich | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US2113484A | Hinged closure for petrol tanks | |
| US2106609A | Centrifugal extractor | |
| US2062668A | Washing machine | |
| US1968692A | Centrifugal machine | |
| US1913600A | Centrifugal machine | |
| US1979201A | Method of extending the cooling action of ice | |
| US1797777A | Bathtub | |
| US1597526A | Cartridge for fire extinguishers and the like | |
| US1627039A | Portable fire extinguisher | |
| US1500946A | Portable fire extinguisher | |
| US1567959A | Fire extinguisher |