Granted Patent
Utility
US 5,597,274 · App. 08/516,118
Hole cutter
Inventor:
Ray E. Behner
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: Aug 17, 1995
Inventor
Ray E. Behner
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.