Granted Patent
Utility
US 5,087,045 · App. 07/485,296
Putting green with adjustable topography and multi-ball return
Inventor:
Samuel Kim
Patented Case
View Patent ↗
Granted: Feb 11, 1992
Filed: Feb 26, 1990
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.