Granted Patent
Utility
US 5,989,481 · App. 08/665,568
Golf club shaft manufacturing process
Inventor:
Daniel You
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Jun 18, 1996
Inventor
Daniel You
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.