Granted Patent
Utility
US 4,459,255 · App. 06/437,441
Catheter distal end finishing method
Inventor:
David S. Sheridan
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Oct 18, 1982
Inventor
David S. Sheridan
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.