Granted Patent
Utility
US 4,907,598 · App. 07/183,613
Guillotine biopsy needle provided with flexible stylus and cannula
Inventor:
Alberto Bauer
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Apr 19, 1988
Inventor
Alberto Bauer
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.