Question #135216. Asked by shorthumbz.
Last updated Aug 05 2021.
Originally posted Mar 26 2014 8:55 AM.
The U.S. Patent and Trademark Office issued the following patents to South Dakota inventors in May 2015.
Patent No. 9,028,335
• Title: Golf simulation system
• Inventor: Sean Coffman, Beresford
• Assigned: None reported
• Summary: Coffman has developed a golf green simulator with a playing surface contour that can be automatically varied.
https://www.argusleader.com/story/news/business-journal/2015/06/16/beresford-man-patents-golf-simulator/28809455/