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Michael N. Sandman

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  • Morrow, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Damper access assembly, clamp assembly, and clamp member
    • Patent number 10,480,812
    • Issue date Nov 19, 2019
    • Langdon Incorporated
    • Joseph P. Sandman
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Fluid conditioning devices and assemblies
    • Patent number 10,012,333
    • Issue date Jul 3, 2018
    • Langdon Incorporated
    • Joseph P. Sandman
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Damper access assembly, clamp assembly, and clamp member
    • Patent number 9,551,505
    • Issue date Jan 24, 2017
    • Langdon Incorporated
    • Joseph P. Sandman
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Damper access assembly
    • Patent number 9,341,291
    • Issue date May 17, 2016
    • Langdon Incorporated
    • Joseph P. Sandman
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Clamping member
    • Patent number D737133
    • Issue date Aug 25, 2015
    • Langdon Incorporated
    • Joseph P. Sandman
    • D08 - Tools and hardware
  • Information Patent Grant

    Clamping member
    • Patent number D736072
    • Issue date Aug 11, 2015
    • Langdon Incorporated
    • Joseph P. Sandman
    • D08 - Tools and hardware
  • Information Patent Grant

    Flange-forming system for tube and related methods
    • Patent number 8,584,497
    • Issue date Nov 19, 2013
    • Langdon Incorporated
    • Joseph P. Sandman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tube coupling and related methods
    • Patent number 8,322,758
    • Issue date Dec 4, 2012
    • Langdon Incorporated
    • Joseph P. Sandman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Flange-forming system for tube and related methods
    • Patent number 7,997,112
    • Issue date Aug 16, 2011
    • Langdon Incorporated
    • Joseph P. Sandman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Sealing gasket for ventilation duct system
    • Patent number 7,523,964
    • Issue date Apr 28, 2009
    • Langdon Incorporated
    • Michael N. Sandman
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Gasket
    • Patent number D534253
    • Issue date Dec 26, 2006
    • Langdon Incorporated
    • Michael N. Sandman
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Portion of ductwork
    • Patent number D529598
    • Issue date Oct 3, 2006
    • Langdon Incorporated
    • Michael N. Sandman
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Portion of ductwork
    • Patent number D521147
    • Issue date May 16, 2006
    • Langdon Incorporated
    • Michael N. Sandman
    • D23 - Environmental heating and cooling

Patents Applicationslast 30 patents

  • Information Patent Application

    DAMPER ACCESS ASSEMBLY, CLAMP ASSEMBLY, AND CLAMP MEMBER
    • Publication number 20170130985
    • Publication date May 11, 2017
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    FLUID CONDITIONING DEVICES AND ASSEMBLIES
    • Publication number 20130331022
    • Publication date Dec 12, 2013
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    DAMPER ACCESS ASSEMBLY, CLAMP ASSEMBLY, AND CLAMP MEMBER
    • Publication number 20130324029
    • Publication date Dec 5, 2013
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    DAMPER ACCESS ASSEMBLY
    • Publication number 20130324028
    • Publication date Dec 5, 2013
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    FLANGE-FORMING SYSTEM FOR TUBE AND RELATED METHODS
    • Publication number 20110296888
    • Publication date Dec 8, 2011
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    FLANGE-FORMING SYSTEM FOR TUBE AND RELATED METHODS
    • Publication number 20110296894
    • Publication date Dec 8, 2011
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Tube Coupling and Related Methods
    • Publication number 20100038902
    • Publication date Feb 18, 2010
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    FLANGE-FORMING SYSTEM FOR TUBE AND RELATED METHODS
    • Publication number 20090085347
    • Publication date Apr 2, 2009
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    FLANGE-FORMING SYSTEM FOR TUBE AND RELATED METHODS
    • Publication number 20090083962
    • Publication date Apr 2, 2009
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    DUCT SYSTEMS AND RELATED METHODS
    • Publication number 20090085349
    • Publication date Apr 2, 2009
    • LANGDON INCORPORATED
    • Joseph P. Sandman
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Application

    Sealing gasket for ventilation duct system
    • Publication number 20060214423
    • Publication date Sep 28, 2006
    • Langdon Incorporated
    • Michael N. Sandman
    • F24 - HEATING RANGES VENTILATING