Patents by Inventor Anderson L. Wilkerson

Anderson L. Wilkerson 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).

  • Septic tank system
    Patent number: 3954612
    Abstract: A septic tank system is provided with an indicator above the ground surface to indicate the water level in the tributaries leading from the tank so that any excess water therein may be pumped out before it causes a back up of sewage upstream of the septic tank.
    Type: Grant
    Filed: June 26, 1974
    Date of Patent: May 4, 1976
    Inventor: Anderson L. Wilkerson