| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 14 | |
| #2 | France | 1 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Analysing materials | |
| #2 | Measuring volume | |
| #3 | Measuring force, work and fluid pressure | |
| #4 | Gas holders | |
| #5 | Special measuring | |
| #6 | Measuring speed and acceleration |
| # | Name | Total Patents |
|---|---|---|
| #1 | Contzen Heinrich | 3 |
| Publication | Filing date | Title |
|---|---|---|
| DE637474C | Procedure for the monitoring of sample voters | |
| GB370257A | Improvements in or relating to pressure or pressure difference gauges | |
| DE511059C | Flow meter |