| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 6 | |
| #2 | Finland | 3 | |
| #3 | Sweden | 2 | |
| #4 | United Kingdom | 1 | |
| #5 | Ireland | 1 | |
| #6 | Norway | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies | |
| #3 | Steam turbines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Niskanen Erkki Pietari | 11 |
| #2 | Pietari Niskanen Erkki | 2 |
| #3 | Kalevi Parviainen Veli | 1 |
| #4 | Viljami Soila Jouko | 1 |
| Publication | Filing date | Title |
|---|---|---|
| FI853554A0 | SPINDELVENTIL Foer ETT TRYCKUNDERKASTAT STROEMMANDE MEDIUM. | |
| US4013094A | 4-Way valve for separating of two liquid supply lines, especially in dairies and similar plants |