| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 43 | |
| #2 | United States | 5 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Measurement | |
| #3 | Foods and drinks | |
| #4 | Engines, pumps and turbines | |
| #5 | Thermal processes | |
| #6 | Mechanical elements | |
| #7 | Electrical machinery and energy | |
| #8 | Machines | |
| #9 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Systems controlling non-electric variables | |
| #2 | Measuring temperature | |
| #3 | Cooling of machines | |
| #4 | Steam traps | |
| #5 | Dairy products | |
| #6 | Unspecified technologies | |
| #7 | Electric switches | |
| #8 | Ignition and extinguishing | |
| #9 | Animal care | |
| #10 | Controlling combustion |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hermann Sandvoss | 5 |
| #2 | Sandvoss Hermann | 4 |
| #3 | Sandvoss Wilhelm | 3 |
| Publication | Filing date | Title |
|---|---|---|
| DE672267C | Pressure regulator | |
| US2100037A | Thermostat | |
| US2013480A | Temperature regulator | |
| US2013766A | Pressure regulator | |
| US1894449A | Meter for heat-quantities | |
| US1453769A | Thermostat |