JJ

Johannes N. Jorritsma

📍 Schreiber, CA: #139 of 2,446 inventorsTop 6%
Overall (All Time): #590,528 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
5854424 Method of estimating total volume of an irregular wetwell 1998-12-29
5497664 Method and apparatus for calculating flow rates through a pumping station 1996-03-12
5190442 Electronic pumpcontrol system 1993-03-02
5182951 Method and aparatus for calculating flow rates through a pumping station 1993-02-02
5178427 Self-releasing lift hook 1993-01-12
5063778 Apparatus for measuring the level of a liquid in a wetwell 1991-11-12
4821580 Method and apparatus for calculating flow rates through a pumping station 1989-04-18
4669308 Method and apparatus for determining liquid flow rates 1987-06-02
4455870 Method and apparatus for determining liquid flow rates 1984-06-26