Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4625626 | Control/fire damper for ducts inventilation installations | Arvo Aalto, Erkki Aalto, Juhani Hasa, Harri Saukkonen, Arvi Tolmunen | 1986-12-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4625626 | Control/fire damper for ducts inventilation installations | Arvo Aalto, Erkki Aalto, Juhani Hasa, Harri Saukkonen, Arvi Tolmunen | 1986-12-02 |