Patents by Inventor Mark D. Schulenberg

Mark D. Schulenberg 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).

  • Heated and recreational chairs
    Patent number: 9775438
    Abstract: A double heated recreational chair includes a pair of chair frames and a table top tray pivotally and swivelly carried by the chair frame. The chair frame is selectively deployable in a folded, collapsed configuration in which the table top tray is deployed in a folded position adjacent to the chair frame. The chair frame is selectively deployable in an extended, functional configuration in which the table top tray is supported on the chair frame in a generally horizontal position.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: October 3, 2017
    Inventor: Mark D. Schulenberg
  • Recreational chair
    Patent number: D631673
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: February 1, 2011
    Inventor: Mark D. Schulenberg