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William J. Seefeldt

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  • Monticello, MN, US
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    Dual-Pressure Dual-Compartment Fluid Tank
    • Publication number 20100170658
    • Publication date Jul 8, 2010
    • Electro Industries, Inc.
    • William J. Seefeldt
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Heat pump with forced air heating regulated by withdrawal of heat t...
    • Publication number 20080276638
    • Publication date Nov 13, 2008
    • Electro Industries, Inc.
    • William J. Seefeldt
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Heat pump system with extended run time boost compressor
    • Publication number 20080264075
    • Publication date Oct 30, 2008
    • Electro Industries, Inc.
    • William J. Seefeldt
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Heat pump system and controls
    • Publication number 20080098760
    • Publication date May 1, 2008
    • Electro Industries, Inc.
    • William J. Seefeldt
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Heat pump with accumulator at boost compressor output
    • Publication number 20080041072
    • Publication date Feb 21, 2008
    • Electro Industries, Inc.
    • William J. Seefeldt
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Heating/cooling system
    • Publication number 20050252226
    • Publication date Nov 17, 2005
    • William J. Seefeldt
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Transfer switch
    • Publication number 20030075982
    • Publication date Apr 24, 2003
    • William J. Seefeldt
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC