Patents by Inventor Martin Luther Brown

Martin Luther Brown 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 for reinforcing tubing
    Patent number: 3961873
    Abstract: This invention relates to an apparatus for reinforcing extruded elastomeric or plastic tubing in which two sets of reinforcing filaments are helically wound around the tubing in opposite directions and the filaments are introduced into the tubing through an annular opening.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: June 8, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Martin Luther Brown