Patents by Inventor Hans G. Luttgen

Hans G. Luttgen 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).

  • Furniture caster
    Patent number: D305500
    Type: Grant
    Filed: July 23, 1986
    Date of Patent: January 16, 1990
    Assignee: Albert Schulte Sohne GmbH & Co.
    Inventor: Hans G. Luttgen