Granted Patent
Utility
US 5,873,889 · App. 08/974,515
Tissue separation cannula with dissection probe and method
Inventor:
Albert K. Chin
Patented Case
View Patent ↗
Granted: Feb 23, 1999
Filed: Nov 19, 1997
Inventor
Albert K. Chin
Assignee (at issue)
Origin Medsystems, 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.