Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297856 | .sup.3 He-.sup.4 He Dilution refrigerator | Willem Anne van Haeringen, Adrianus P. Severijns | 1981-11-03 |
| 4296609 | .sup.3 He-.sup.4 He refrigerator | Adrianus P. Severijns | 1981-10-27 |
| 4213311 | Superleak | Adrianus P. Severijns | 1980-07-22 |