| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 25 | |
| #2 | Germany | 2 | |
| #3 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Consumer goods | |
| #4 | Furniture and games | |
| #5 | Control | |
| #6 | Foods and drinks | |
| #7 | Engines, pumps and turbines | |
| #8 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Refrigerators | |
| #2 | Ice-boxes | |
| #3 | Unspecified technologies | |
| #4 | Unspecified technologies | |
| #5 | Special furniture | |
| #6 | Systems controlling non-electric variables | |
| #7 | Air-conditioning | |
| #8 | Pumps | |
| #9 | Gearing | |
| #10 | Cocoa and sweets |
| # | Name | Total Patents |
|---|---|---|
| #1 | George Hilger | 25 |
| Publication | Filing date | Title |
|---|---|---|
| US1861158A | Air conditioning system | |
| US1798795A | Condenser | |
| US1889917A | Refrigerating system | |
| US1889988A | Refrigerating system | |
| US1829517A | Automatic valve | |
| US1882597A | Refrigerating system | |
| US1882596A | Refrigerating system | |
| US1718558A | Fluid compressor | |
| US1706230A | Valve | |
| US1844161A | Multiple pressure refrigeration system | |
| US1818133A | Refrigerating system | |
| US1705765A | Ventilating system | |
| US1662806A | Refrigeration system | |
| US1705764A | Refrigeration system | |
| US1627328A | Refrigeration system | |
| GB257370A | Improvements in or relating to automatic refrigerating systems | |
| US1601445A | Refrigeration system | |
| GB244538A | Automatic refrigeration system | |
| US1601444A | Automatic control valve for refrigeration systems | |
| US1581636A | Automatic valve-operating means for refrigeration systems |