Patents by Inventor Andrew E. Campbell

Andrew E. Campbell 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).

  • Patent number: D273425
    Type: Grant
    Filed: April 8, 1981
    Date of Patent: April 10, 1984
    Inventors: Andrew E. Campbell, Jack LeVan
  • Patent number: D304381
    Type: Grant
    Filed: October 16, 1986
    Date of Patent: October 31, 1989
    Inventor: Andrew E. Campbell