Granted Patent
Utility
US 5,725,506 · App. 08/583,813
Device for paracentesis and thoracentesis
Inventors:
Shirley K. Freeman, David Skinkle, Bonnie B. Vivian
Patented Case
View Patent ↗
Granted: Mar 10, 1998
Filed: Jan 5, 1996
Inventors
Shirley K. Freeman
David Skinkle
Bonnie B. Vivian
Assignee (at issue)
Denver Biomaterials, 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.