Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5992231 | Apparatus for measuring the quality of a fluid in a vessel | Comelis W. P. Schoenmakers, Marian Jozef Walter Slezak | 1999-11-30 |
| 5994907 | Apparatus for capacitive measurements | Marian Jozef Walter Slezak, Cornelis Wijnand Petrus Schoenmakers | 1999-11-30 |
| 4780663 | Gauge for measuring the conductance of a liquid present between two electrodes | — | 1988-10-25 |
| 4674329 | Gauge for measuring the level or the conductance of a liquid present between two electrodes | — | 1987-06-23 |