Patents by Inventor Doug Howard Chamberlain

Doug Howard Chamberlain 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).

  • Looped wallet
    Patent number: D807636
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: January 16, 2018
    Assignee: Loop Wallet LLC
    Inventors: Doug Howard Chamberlain, David John Franco