Granted Patent
Utility
US 4,350,151 · App. 06/242,720
Expanding dilator
Inventor:
F. Brantley Scott
Patented Case
View Patent ↗
Granted: Sep 21, 1982
Filed: Mar 12, 1981
Inventor
F. Brantley Scott
Assignee (at issue)
Lone Star Medical Products, Inc.
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.