Patents by Inventor John L. Pitman

John L. Pitman 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).

  • Watering control system
    Patent number: 5025361
    Abstract: An irrigation controller (1) which includes a removable module (8) which is adapted to interface a computer (10) under specific control of a ROM cartridge (11) through a joystick port. The module (8) includes a central processing unit (13), memory (14,15) and a controlling programme together with battery back-up (18) for maintenance and control for a pattern of irrigation control varying dependent on the month of the year.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: June 18, 1991
    Inventors: John L. Pitman, Kyn A. McCauley