Patents by Inventor Arnold R. Engle

Arnold R. Engle 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: D307171
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: April 10, 1990
    Inventor: Arnold R. Engle
  • Patent number: D307312
    Type: Grant
    Filed: July 30, 1987
    Date of Patent: April 17, 1990
    Inventor: Arnold R. Engle
  • Patent number: D334226
    Type: Grant
    Filed: September 7, 1990
    Date of Patent: March 23, 1993
    Assignee: Quick Set Pole Holder Company
    Inventor: Arnold R. Engle