Granted Patent
Utility
US 5,163,944 · App. 07/742,920
Obstetrical vacuum extractor
Inventor:
Theodore C. Neward
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Aug 9, 1991
Inventor
Theodore C. Neward
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.