Granted Patent
Utility
US 4,946,719 · App. 07/280,229
Drainable artificial turf assembly
Inventor:
Barry J. Dempsey
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Dec 5, 1988
Inventor
Barry J. Dempsey
Assignee (at issue)
Astroturf Industries, Inc.
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.