Johannes N. Jorritsma

Person

Aurora, Ontario, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Method of estimating total volume of an irregular wetwell
- Patent number 5,854,424
- Issue date Dec 29, 1998
- Johannes N. Jorritsma
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for calculating flow rates through a pumping s...
- Patent number 5,497,664
- Issue date Mar 12, 1996
- Johannes N. Jorritsma
- G01 - MEASURING TESTING
Information Patent Grant
Electronic pumpcontrol system
- Patent number 5,190,442
- Issue date Mar 2, 1993
- Johannes N. Jorritsma
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Method and aparatus for calculating flow rates through a pumping st...
- Patent number 5,182,951
- Issue date Feb 2, 1993
- Johannes N. Jorritsma
- G01 - MEASURING TESTING
Information Patent Grant
Self-releasing lift hook
- Patent number 5,178,427
- Issue date Jan 12, 1993
- Johannes N. Jorritsma
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Apparatus for measuring the level of a liquid in a wetwell
- Patent number 5,063,778
- Issue date Nov 12, 1991
- Johannes N. Jorritsma
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and apparatus for calculating flow rates through a pumping s...
- Patent number 4,821,580
- Issue date Apr 18, 1989
- Johannes N. Jorritsma
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for determining liquid flow rates
- Patent number 4,669,308
- Issue date Jun 2, 1987
- Johannes N. Jorritsma
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for determining liquid flow rates
- Patent number 4,455,870
- Issue date Jun 26, 1984
- Johannes N. Jorritsma
- G01 - MEASURING TESTING

Johannes N. Jorritsma

Person

Patents Grantslast 30 patents

Method of estimating total volume of an irregular wetwell

Method and apparatus for calculating flow rates through a pumping s...

Electronic pumpcontrol system

Method and aparatus for calculating flow rates through a pumping st...

Self-releasing lift hook

Apparatus for measuring the level of a liquid in a wetwell

Method and apparatus for calculating flow rates through a pumping s...

Method and apparatus for determining liquid flow rates

Method and apparatus for determining liquid flow rates