Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4615053 | Pipe coupling with water seal between the sinks of a drain board and the drain pipe | Heikki Masalin, Kalervo Mannisto | 1986-10-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4615053 | Pipe coupling with water seal between the sinks of a drain board and the drain pipe | Heikki Masalin, Kalervo Mannisto | 1986-10-07 |