Patents by Inventor Erwin J. Grauert

Erwin J. Grauert 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).

  • Invertible table
    Patent number: D252480
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: July 31, 1979
    Assignee: Grauert Enterprises, Inc.
    Inventor: Erwin J. Grauert
  • Mirror frame
    Patent number: D350441
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: September 13, 1994
    Inventor: Erwin J. Grauert