| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 11 | |
| #2 | United Kingdom | 2 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Mechanical elements | |
| #3 | Medical technology | |
| #4 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Venting or aerating devices | |
| #3 | Separation | |
| #4 | Veterinary instruments or methods | |
| #5 | Measuring force, work and fluid pressure |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fritz Georg | 9 |
| #2 | Georg Fritz | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1036525A | Liquid level indicator | |
| US3242732A | Liquid level indicator apparatus | |
| GB1039466A | Overfilling safety device for tanks |