Granted Patent
Utility
US 5,100,145 · App. 07/578,568
Putting green with adjustable topography and multi-ball return
Inventor:
Samuel Kim
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Sep 6, 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.