Jorritsma; Johannes N.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Jorritsma; Johannes N..The latest application filed is for "method and apparatus for calculating flow rates through a pumping station".
- Jorritsma; Johannes N. - Aurora Ontario CA
| Patent | Date |
|---|---|
| Method and apparatus for calculating flow rates through a pumping station Grant 5,497,664 - Jorritsma March 12, 1 | 1996-03-12 |
| Electronic pumpcontrol system Grant 5,190,442 - Jorritsma March 2, 1 | 1993-03-02 |
| Self-releasing lift hook Grant 5,178,427 - Jorritsma January 12, 1 | 1993-01-12 |
| Apparatus for measuring the level of a liquid in a wetwell Grant 5,063,778 - Jorritsma November 12, 1 | 1991-11-12 |
| Method and apparatus for calculating flow rates through a pumping station Grant 4,821,580 - Jorritsma April 18, 1 | 1989-04-18 |
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