Patents by Inventor Miranda J. Bull, executrix

Miranda J. Bull, executrix 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).

  • Apparatus relating to the linings of pipelines and passageways
    Patent number: 5577864
    Abstract: The invention provides that where a main underground pipeline or passageway (10) is lined by a lining tube which extends over the connection of a lateral pipe (12) with the main pipeline or passageway (10), the lateral connection can be readily located and the lining tube (44) cut to re-establish the connection, if such as a steel ball or other deposit, which is radiation detectable, is placed on the surface of the pipeline or passageway (10) at a predetermined distance (77) from the said lateral connection.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: November 26, 1996
    Assignee: Insituform B.V.
    Inventors: Eric Wood, deceased, Miranda J. Bull, executrix