Granted Patent
Utility
US 6,641,591 · App. 09/648,025
Instruments and techniques for controlled removal of epidermal layers
Inventor:
John H. Shadduck
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Aug 25, 2000
Inventor
John H. Shadduck
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.