Patents by Inventor Frederick W. H. Groombridge

Frederick W. H. Groombridge 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 closets
    Patent number: 4162548
    Abstract: A water closet shell comprising a basin component formed in one piece of molded plastics material and a cistern component likewise formed and when assembled defines a water closet unit having a flushing rim section. The flushing rim section is defined by mating an upwardly projecting ridge from the basin with a downwardly projecting ridge from the flushing rim.
    Type: Grant
    Filed: February 27, 1978
    Date of Patent: July 31, 1979
    Assignee: Celanese Corporation
    Inventors: Frederick W. H. Groombridge, Ronald N. Butler