Granted Patent
Utility
US 4,915,938 · App. 07/120,336
Hair treating composition
Inventor:
Mary E. Zawadzki
Patented Case
View Patent ↗
Granted: Apr 10, 1990
Filed: Nov 13, 1987
Inventor
Mary E. Zawadzki
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.