Granted Patent
Utility
US 5,393,113 · App. 08/138,529
Handle attachment for chest drainage unit
Inventor:
Robert Walsh
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Oct 15, 1993
Inventor
Robert Walsh
Assignee (at issue)
Sherwood Medical Company
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.