This book excerpt doesn't mention the bar code patent troll, a man who made billions out of evergreened or invalid bar code patents: https://www.forbes.com/sit

This book excerpt doesn't mention the bar code patent troll, a man who made billions out of evergreened or invalid bar code patents: https://www.forbes.com/sites/danielfisher/2012/12/14/the-patent-troll-you-dont-read-about-in-bar-code-inventors-obituaries https://www.forbes.com/sites/danielfisher/2012/12/14/the-pat...