Granted Patent
Utility
US 5,201,315 · App. 07/773,037
Ultrasound imaging sheath
Inventor:
James M. Griffith
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Oct 8, 1991
Inventor
James M. Griffith
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.