Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4697607 | Procedure and means for making the effect of gravity the same in flow regulators independent of the installation mode | Erkki Aalto | 1987-10-06 |
| 4694851 | Flow regulator and its use | Erkki Aalto | 1987-09-22 |
| 4678005 | Flow regulator | Erkki Aalto | 1987-07-07 |
| 4674531 | Flow regulator | Erkki Aalto, Reijo Villikka | 1987-06-23 |