Granted Patent
Utility
US 4,856,175 · App. 07/195,219
Method of manufacturing elevated floor panels
Inventors:
Eugene L. Swensen, George F. Ray, III
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: May 18, 1988
Inventors
Eugene L. Swensen
George F. Ray, III
Assignee (at issue)
USG INTERIORS, LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.