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Donald Steen

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  • Sanford, NC, US
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    CONTROL ALGORITHM OF VARIABLE SPEED PUMPING SYSTEM
    • Publication number 20210054846
    • Publication date Feb 25, 2021
    • Pentair Water Pool and Spa, Inc.
    • Robert W. Stiles
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Control Algorithm of Variable Speed Pumping System
    • Publication number 20170198697
    • Publication date Jul 13, 2017
    • Pentair Water Pool and Spa, Inc.
    • Robert W. Stiles
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Control Algorithm of Variable Speed Pumping System
    • Publication number 20140322030
    • Publication date Oct 30, 2014
    • Robert W. Stiles
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Control Algorithm of Variable Speed Pumping System
    • Publication number 20120063921
    • Publication date Mar 15, 2012
    • Robert W. Stiles, JR.
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Control algorithm of variable speed pumping system
    • Publication number 20070114162
    • Publication date May 24, 2007
    • Pentair Water Pool and Spa, Inc.
    • Robert W. Stiles
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...