Patents by Inventor Jack Gardner

Jack Gardner 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).

  • Water well monitoring system
    Patent number: 6928868
    Abstract: An apparatus and method for monitoring a liquid level in a 4-20 mA closed loop system are provided. A process instrument and a measuring unit are powered for a predetermined time and power is provided by a battery.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: August 16, 2005
    Assignee: Endress & Hauser Wetzer GmbH & Co. KG
    Inventors: Keith Ridenour, Jack Gardner
  • Water well monitoring system
    Publication number: 20030192379
    Abstract: An apparatus and method for monitoring a liquid level in a 4-20 mA closed loop system are provided. A process instrument and a measuring unit are powered for a predetermined time and power is provided by a battery.
    Type: Application
    Filed: April 11, 2002
    Publication date: October 16, 2003
    Inventors: Keith Ridenour, Jack Gardner