Patents by Inventor Petrus A. Anderson

Petrus A. Anderson 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).

  • Portable punch and die jig
    Patent number: 4065853
    Abstract: A portable punch and die jig includes a U-shaped jig of predetermined width having a slot of predetermined width in the base thereof extending completely across the width of the jig adapted to fit over the walls of rectangular tubes and a punch and die assembly disposed in a hole extending through the base of the jig communicating with the slot in the base of the jig for punching a hole in the walls of the rectangular tubes at precisely determined locations.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: January 3, 1978
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: Edward F. Lewandowski, Petrus A. Anderson