Patents by Inventor David J. Hackman

David J. Hackman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Drilling machine and method
    Patent number: 9945180
    Abstract: The present disclosure provides a machine capable of drilling into the ground at a wide range of angles relative to the ground surface. The present disclosure also provides novel drilling methods.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: April 17, 2018
    Assignee: Vermeer Manufacturing Company
    Inventors: Louis C. Hartke, David J. Hackman, Daniel L. Gustafson, Chad A. Bartels, Orin L. Miller, John W. Philbrook
  • DRILLING MACHINE AND METHOD
    Publication number: 20140144707
    Abstract: The present disclosure provides a machine capable of drilling into the ground at a wide range of angles relative to the ground surface. The present disclosure also provides novel drilling methods.
    Type: Application
    Filed: January 30, 2014
    Publication date: May 29, 2014
    Applicant: Vermeer Manufacturing Company
    Inventors: Louis C. Hartke, David J. Hackman, Daniel L. Gustafson, Chad A. Bartels, Orin L. Miller, John W. Philbrook
  • DRILLING MACHINE AND METHOD
    Publication number: 20110174545
    Abstract: The present disclosure provides a machine capable of drilling into the ground at a wide range of angles relative to the ground surface. The present disclosure also provides novel drilling methods.
    Type: Application
    Filed: January 14, 2011
    Publication date: July 21, 2011
    Applicant: VERMEER MANUFACTURING COMPANY
    Inventors: Louis C. Hartke, David J. Hackman, Daniel L. Gustafson, Chad A. Bartels, Orin L. Miller, John W. Philbrook