Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5482679 | Device for determining the Wobbe index of a gas mixture | Hermanus M. Verbeek | 1996-01-09 |
| 4722517 | Mechanical spring having negative spring stiffness useful in an electroacoustic transducer | Bernard P. Videc, Jan Huizinga | 1988-02-02 |
| 4619119 | Heat pump comprising a thermally driven liquid pump and liquid pump for use in a heat pump | Jan Huizinga | 1986-10-28 |
| 4607382 | Electroacoustic transducer unit with reduced resonant frequency and mechanical spring with negative spring stiffness, preferably used in such a transducer unit | Bernard P. Videc, Jan Huizinga | 1986-08-19 |
| 4498296 | Thermodynamic oscillator with average pressure control | Andreas J. Garenfeld | 1985-02-12 |