Granted Patent
Utility
US 5,997,486 · App. 09/066,236
Device for paracentisis and thoracentisis
Inventors:
Paul P. Burek, Bonnie B. Vivian, David Skinkle
Patented Case
View Patent ↗
Granted: Dec 7, 1999
Filed: Apr 24, 1998
Inventors
Paul P. Burek
Bonnie B. Vivian
David Skinkle
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.