Spaargaren; Klaas
Patent Applications and Registrations
Patent applications and USPTO patent grants for Spaargaren; Klaas.The latest application filed is for "capacitive level gauge".
- Spaargaren; Klaas - Amsterdam NL
| Patent | Date |
|---|---|
| Capacitive level gauge Grant 4,553,434 - Spaargaren November 19, 1 | 1985-11-19 |
| Non-drifting Hold-amplifier Grant 3,778,725 - Spaargaren , et al. December 11, 1 | 1973-12-11 |
| Control Of A Process Variable By A Computer And A Controller Which Replaces The Computer Grant 3,665,172 - Spaargaren , et al. May 23, 1 | 1972-05-23 |
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