Patents by Inventor John Spurr

John Spurr 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).

  • Mass spectometer sample slide
    Patent number: D344139
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: February 8, 1994
    Assignee: Finnigan Mat Ltd.
    Inventors: John Spurr, John Cottrell