Patents by Inventor Brady A. Rettkowski

Brady A. Rettkowski 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).

  • Single operator trenching pipe laying device and method
    Patent number: 9057458
    Abstract: A single operator extruder main body dispenses aggregate, pipe and geotextile during a trenching operation. Lifting elements allows the main body to be manipulated by a single operator.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: June 16, 2015
    Inventor: Brady A. Rettkowski