Granted Patent
Utility
US 5,318,303 · App. 07/831,410
Putting green with adjustable topography and multi-ball return
Inventor:
Samuel Kim
Patented Case
View Patent ↗
Granted: Jun 7, 1994
Filed: Feb 5, 1992
Inventor
Samuel Kim
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.