Granted Patent
Utility
US 6,715,156 · App. 10/338,367
Reversible protective headgear for wrestlers
Inventor:
John Purnell
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Jan 9, 2003
Inventor
John Purnell
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.