Patents by Inventor Glenn A. Cooper, Jr.

Glenn A. Cooper, Jr. 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).

  • Delta culvert
    Patent number: 4011726
    Abstract: This invention provides an all-wooden culvert shaped as an equilateral triangle in which the three sides are joined solely by interlocking of the structural members in notches in each member. All sides are composed of a series of identical members which feature facilitates member fabrication and allows for culvert installation by unskilled labor.
    Type: Grant
    Filed: November 5, 1975
    Date of Patent: March 15, 1977
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Glenn A. Cooper, Jr.