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David M. Graf

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  • Scappoose, OR, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hammer for shredding machines
    • Patent number 10,471,435
    • Issue date Nov 12, 2019
    • ESCO Group LLC
    • David M. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Stepped shredder hammers
    • Patent number 10,022,724
    • Issue date Jul 17, 2018
    • ESCO Corporation
    • Michael R. Weeks
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Hammer for shredding machines
    • Patent number 9,855,560
    • Issue date Jan 2, 2018
    • ESCO Corporation
    • David M. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Hammer for shredding machines
    • Patent number D792488
    • Issue date Jul 18, 2017
    • ESCO Corporation
    • David M. Graf
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Hammer for shredding machines
    • Patent number D731564
    • Issue date Jun 9, 2015
    • ESCO Corporatio
    • David M. Graf
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Stepped hammer for shredding machines
    • Patent number D731565
    • Issue date Jun 9, 2015
    • ESCO Corporation
    • Michael R. Weeks
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Shredder hammers including improved engagement between the hammer p...
    • Patent number 8,308,094
    • Issue date Nov 13, 2012
    • ESCO Corp.
    • John P. Hoice
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Wear member for excavating equipment
    • Patent number 7,367,144
    • Issue date May 6, 2008
    • ESCO Corporation
    • Larren F. Jones
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Coupling for excavating wear part
    • Patent number 6,993,861
    • Issue date Feb 7, 2006
    • ESCO Corporation
    • Christopher M. Carpenter
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

  • Information Patent Application

    HAMMER FOR SHREDDING MACHINES
    • Publication number 20180085758
    • Publication date Mar 29, 2018
    • Esco Corporation
    • David M. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Application

    STEPPED SHREDDER HAMMERS
    • Publication number 20150129695
    • Publication date May 14, 2015
    • Esco Corporation
    • Michael R. Weeks
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Application

    HAMMER FOR SHREDDING MACHINES
    • Publication number 20140151475
    • Publication date Jun 5, 2014
    • David M. Graf
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Application

    SHREDDER HAMMERS
    • Publication number 20130233955
    • Publication date Sep 12, 2013
    • Esco Corporation
    • Daniel R. Morrow
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Application

    Shredder Hammers Including Improved Engagement Between the Hammer P...
    • Publication number 20100213301
    • Publication date Aug 26, 2010
    • Esco Corporation
    • John P. Hoice
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Application

    Coupling for excavating wear part
    • Publication number 20060117613
    • Publication date Jun 8, 2006
    • Esco Corporation
    • Larren F. Jones
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    Coupling for excavating wear part
    • Publication number 20030024139
    • Publication date Feb 6, 2003
    • Esco Corporation
    • Larren F. Jones
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING