Granted Patent
Utility
US 4,274,398 · App. 06/038,469
Surgical retractor utilizing elastic tubes frictionally held in spaced notches
Inventor:
Frank B. Scott
Patented Case
View Patent ↗
Granted: Jun 23, 1981
Filed: May 14, 1979
Inventor
Frank B. Scott
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.