Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4723602 | Heat exchanger with multiwall tubes | Theodoor J. Tromp, Jan Vrijen, Johan K. van Westenbrugge | 1988-02-09 |
| 4203185 | Method of sealing tube plate apertures, and repair set for use therein | Nico H. H. Beyer, Johan K. van Westenbrugge | 1980-05-20 |