| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 4 | |
| #2 | France | 4 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Control |
| # | Technology | |
|---|---|---|
| #1 | Analysing materials | |
| #2 | Measuring force, work and fluid pressure | |
| #3 | Measuring volume | |
| #4 | Registering devices | |
| #5 | Measuring speed and acceleration |
| Publication | Filing date | Title |
|---|---|---|
| DE386265C | Process for manufacturing diaphragm pressure gauges with protection against excess pressure | |
| DE344919C | Pressure gauge with automatic correction according to the barometric pressure | |
| GB191116164A | An Improved Differential Manometer. |