Patents by Inventor Ralph McEntyre

Ralph McEntyre 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).

  • Underground percolation head and watering system
    Patent number: 4182583
    Abstract: This invention relates generally to underground irrigation systems and more specifically to the specific equipment required by such systems in the form of pipes, covers, valves and the like. This invention provides a means by which existing conventional surface sprinkling systems may be easily converted to the underground variety and a simplified inexpensive construction of an underground irrigation system.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: January 8, 1980
    Inventor: Ralph McEntyre