Patents by Inventor Robert Frederick Hoefler

Robert Frederick Hoefler 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).

  • Fluid drain device
    Patent number: D734795
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: July 21, 2015
    Assignee: LINCOLN INDUSTRIAL CORPORATION
    Inventors: Robert Frederick Hoefler, David Mark Allen
  • Fluid drain device
    Patent number: D736290
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: August 11, 2015
    Assignee: LINCOLN INDUSTRIAL CORPORATION
    Inventors: Robert Frederick Hoefler, David Mark Allen