Patents by Inventor Nic G. Cortlever

Nic G. Cortlever 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).

  • Device for inserting a drainage wick into the ground
    Patent number: 4755080
    Abstract: In inserting a drainage wick into the ground, a tube containing the drainage wick is plunged into the ground with continuous downward driving force, whereafter the tube is withdrawn leaving the wick embedded in the ground.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: July 5, 1988
    Inventors: Nico G. Cortlever, Nic G. Cortlever