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David A. Yingling

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  • Covington, WA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Helmet adapter for pile drivers
    • Patent number 9,255,375
    • Issue date Feb 9, 2016
    • American Piledriving Equipment, Inc.
    • David A. Yingling
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Clamping systems and methods for piledriving
    • Patent number 8,186,452
    • Issue date May 29, 2012
    • American Piledriving Equipment, Inc.
    • John L. White
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

  • Information Patent Application

    HELMET ADAPTER FOR PILE DRIVERS
    • Publication number 20140377011
    • Publication date Dec 25, 2014
    • David A. Yingling
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Application

    HELMET ADAPTER FOR PILE DRIVERS
    • Publication number 20100303552
    • Publication date Dec 2, 2010
    • AMERICAN PILEDRIVING EQUIPMENT, INC.
    • David A. Yingling
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING