| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 8 | |
| #2 | France | 5 | |
| #3 | Austria | 2 | |
| #4 | Germany | 2 | |
| #5 | EPO (European Patent Office) | 2 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Mechanical elements | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Venting or aerating devices | |
| #3 | Measuring light | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Gebauer Heinz | 4 |
| #2 | Weka Ag | 3 |
| #3 | Arthur Welter | 2 |
| #4 | Otto Stefan | 1 |
| #5 | Tobler Ernst | 1 |
| #6 | Ernst Tobler | 1 |
| #7 | Kurt Messikommer | 1 |
| Publication | Filing date | Title |
|---|---|---|
| EP1054241A2 | Level probe with minimal dead volume | |
| EP0693646A1 | Switching device with pneumatic reed switch | |
| CH644950A5 | Fluessigkeitsstandanzeiger. | |
| CH576126A5 | Remote indicator for level gauge with magnetic float - with continuously variable indication through rotation of magnetic helix | |
| US2703035A | Light measuring apparatus |