Inventor
WILLI JOHN M
US4 patents
Patents
4 patentsUS9255403B1Feb 9, 2016
Free span ceiling grid system
USG INTERIORS LLC41 citations96
US9663948B2May 30, 2017
Free span ceiling grid system
USG INTERIORS LLC21 citations93
US9909312B2Mar 6, 2018
Free span ceiling grid system
USG INTERIORS LLC12 citations81
US11098474B2Aug 24, 2021
Wall channel for grid tee
USG INTERIORS LLC2 citations71