Robert J. Wietharn

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Clay Center, KS, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-cleaning screen assembly for filtering irrigation water
- Patent number 9,023,198
- Issue date May 5, 2015
- Robert J Wietharn
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Self-cleaning screen assembly for filtering irrigation water
- Patent number 8,652,324
- Issue date Feb 18, 2014
- Robert J. Wietharn
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
SELF-CLEANING SCREEN ASSEMBLY FOR FILTERING IRRIGATION WATER
- Publication number 20140138300
- Publication date May 22, 2014
- Robert J. Wietharn
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
SELF-CLEANING SCREEN ASSEMBLY FOR FILTERING IRRIGATION WATER
- Publication number 20110233132
- Publication date Sep 29, 2011
- ROBERT J. WIETHARN
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL