Patents by Inventor Leopold Parth

Leopold Parth 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).

  • Adjustable width panel assembly
    Patent number: 5904343
    Abstract: An adjustable-width panel assembly for the construction of fences, walls, and other structures incorporating panels, which minimizes the need for separate fasteners to inter-connect successive panel members.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: May 18, 1999
    Assignee: North American Pipe Corporation
    Inventor: Leopold Parth
  • Adjustable width panel assembly
    Patent number: 5725201
    Abstract: An adjustable-width panel assembly for the construction of fences, walls, and other structures incorporating panels, which minimizes the need for separate fasteners to inter-connect successive panel members.
    Type: Grant
    Filed: December 11, 1995
    Date of Patent: March 10, 1998
    Assignee: North American Pipe Corporation
    Inventor: Leopold Parth