| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 10 | |
| #2 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Engines, pumps and turbines | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Analysing materials | |
| #2 | Fire-fighting | |
| #3 | Measuring volume | |
| #4 | Internal-combustion piston engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jentzsch Hermann | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB232633A | Device for indicating the explosiveness and explosion pressure of motor oils and fuels | |
| GB230484A | Device for indicating the explosiveness and explosion pressure of motor oils and fuels |