| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Italy | 7 | |
| #2 | Germany | 4 | |
| #3 | France | 3 | |
| #4 | Switzerland | 2 | |
| #5 | Denmark | 2 | |
| #6 | United Kingdom | 2 | |
| #7 | Netherlands | 2 | |
| #8 | Austria | 1 | |
| #9 | Belgium | 1 | |
| #10 | EPO (European Patent Office) | 1 | |
| #11 | Finland | 1 | |
| #12 | Norway | 1 | |
| #13 | Sweden | 1 | |
| #14 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Control |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Systems controlling non-electric variables | |
| #3 | Pipes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Luerti Carlo | 7 |
| #2 | Cazzaniga Franco | 4 |
| #3 | Luerti C | 4 |
| Publication | Filing date | Title |
|---|---|---|
| EP1247039A1 | Improved tube fitting sealing member | |
| FR2394003A1 | Bleed valve for central heating system - has float to seal outlet after all air has been removed | |
| DE2647648A1 | Pressure boiler air outlet valve - comprises container with float which seals valve aperture when fluid pressure rises | |
| IT1043483B | PRESSURE REDUCING DEVICE WITH DIRECT STABILIZATION OF THE REDUCED VALLEY PRESSURE | |
| GB1521994A | Pressure reducing device |