Roffelsen; Franciscus
Patent Applications and Registrations
Patent applications and USPTO patent grants for Roffelsen; Franciscus.The latest application filed is for "method for feeding a closed liquid system".
- Roffelsen; Franciscus - Helmond NL
| Patent | Date |
|---|---|
| Non-return valve Grant 6,968,863 - Roffelsen November 29, 2 | 2005-11-29 |
| Method for manufacturing a double-walled heat exchanging tube with leak detection Grant 6,926,069 - Roffelsen August 9, 2 | 2005-08-09 |
| Method for feeding a closed liquid system App 20040244847 - Roffelsen, Franciscus | 2004-12-09 |
| Heat exchanger tube and method of manufacturing same Grant 6,192,583 - Roffelsen February 27, 2 | 2001-02-27 |
| Fixing device for mounting objects on supports Grant 4,747,737 - Roffelsen May 31, 1 | 1988-05-31 |
| Heat exchanger duct with heat exchange wiring Grant 4,655,282 - Roffelsen April 7, 1 | 1987-04-07 |
| Method and apparatus for reducing the gas content of a liquid Grant 4,645,518 - Roffelsen February 24, 1 | 1987-02-24 |
| Method of and apparatus for the degasification of circulation systems for liquids Grant 4,456,172 - Roffelsen June 26, 1 | 1984-06-26 |
| Apparatus for venting and/or degassing a pipeline system Grant 4,381,928 - Roffelsen May 3, 1 | 1983-05-03 |
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