| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 7 | |
| #2 | Austria | 3 | |
| #3 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Rotary-pistons | |
| #3 | Non-positive-displacement pumps | |
| #4 | Shafts | |
| #5 | Venting or aerating devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Richter Karl Ing | 2 |
| #2 | Knuth Roethel | 1 |
| #3 | Gerhard Weiss | 1 |
| #4 | Roland Mehlhorn | 1 |
| #5 | Glumpf Guenter | 1 |
| #6 | Guenter Weller | 1 |
| #7 | Manfred Troeger | 1 |
| #8 | Schwarz Werner Dipl Ing | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FR90943E | Diaphragm pump, in particular metering pump | |
| FR1493620A | Diaphragm pump, in particular metering pump |