Patents by Inventor Mark A. Mitschele

Mark A. Mitschele 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).

  • Hand tool for removing sprinkler heads from underground watering systems
    Patent number: 4788894
    Abstract: A hand held tool for rotating and twisting as it is forced into the turf and ground over and around a part of a watering system such as a sprinkler head, and employing a ridge at least partially around its inside periphery which traps and compresses the ground in the tool, causing the tool to interlock with the sprinkler head so that the sprinkler head can be threadedly removed from a riser pipe by rotation of the tool.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: December 6, 1988
    Inventor: Mark A. Mitschele