Patents by Inventor Paul Alan Fletcher

Paul Alan Fletcher 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).

  • Patent number: 6334260
    Abstract: A strata movement indicator suspended within a borehole 1 is provided with a drive element 6 and a reference element 12, relative movement between the elements being translated into rotary motion to give a visual indication on an indicator 10, 24 on the respective elements.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: January 1, 2002
    Assignee: Rock Mechanics Technology Limited
    Inventors: Alan Stuart Bloor, Paul Alan Fletcher