John Christensen

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Louisville, KY, US

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Patents Grantslast 30 patents

Information Patent Grant
Filtration device for a waste water treatment system
- Patent number 6,360,898
- Issue date Mar 26, 2002
- Harry L. Nurse
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Filtration device for a waste water treatment system
- Patent number 6,306,299
- Issue date Oct 23, 2001
- Harry L. Nurse
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE