Granted Patent
Utility
US 5,817,033 · App. 08/658,487
Needle core biopsy device
Inventors:
Stephen DeSantis, Norman S. Gordon, Robert P. Cooper
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Jun 10, 1996
Inventors
Stephen DeSantis
Norman S. Gordon
Robert P. Cooper
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.