Granted Patent
Utility
US 4,639,247 · App. 06/667,581
Percutaneous access device
Inventor:
Jack C. Bokros
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Nov 2, 1984
Inventor
Jack C. Bokros
Assignee (at issue)
Carbomedics 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.