| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Italy | 4 | |
| #2 | German Democratic Republic | 2 | |
| #3 | EPO (European Patent Office) | 2 | |
| #4 | Spain | 2 | |
| #5 | South Africa | 2 | |
| #6 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machine tools | |
| #3 | Engines, pumps and turbines | |
| #4 | Civil engineering | |
| #5 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mambrini Romano | 8 |
| #2 | Mambrini Luca | 3 |
| #3 | Mambrini Giuliano | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US6886594B2 | On-off valve, particularly for insulation by-pass of exhaust gas expansion turbines of catalytic cracking plants | |
| DD251387A5 | Throttle valve | |
| EP0171368A1 | Apparatus for transferring drill rods from a rod store to the rotation head of a drilling machine and vice versa |