Granted Patent
Utility
US 6,338,728 · App. 09/571,570
Chest drainage device having multiple operation indicators
Inventors:
Michael A. Valerio, Trinh Phung, Anthony R. Carlone, Victor E. Santos, Lawrence F. Travers
Patented Case
View Patent ↗
Granted: Jan 15, 2002
Filed: May 17, 2000
Inventors
Michael A. Valerio
Trinh Phung
Anthony R. Carlone
Victor E. Santos
Lawrence F. Travers
Assignee (at issue)
Genzyme Corporation
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.