Granted Patent
Utility
US 4,775,530 · App. 07/000,666
Method for treatment and prevention of pseudofolliculitis barbae
Inventor:
Nicholas V. Perricone
Patented Case
View Patent ↗
Granted: Oct 4, 1988
Filed: Jan 6, 1987
Inventor
Nicholas V. Perricone
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.