Granted Patent
Utility
US 5,560,373 · App. 08/417,750
Needle core biopsy instrument with durable or disposable cannula assembly
Inventor:
Stephen A. De Santis
Patented Case
View Patent ↗
Granted: Oct 1, 1996
Filed: Apr 6, 1995
Inventor
Stephen A. De Santis
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.