Patents by Inventor Stephen P. McGregor

Stephen P. McGregor 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).

  • In situ brick or block making formwork
    Patent number: 5029804
    Abstract: A mold for forming walls in situ by forming a wall portion and sequentially moving the mold as the wall is formed. The mold has opposed form walls and partitions which together define a wider space in the middle than adjacent the form walls.
    Type: Grant
    Filed: April 4, 1989
    Date of Patent: July 9, 1991
    Inventor: Stephen P. McGregor