Granted Patent
Utility
US 5,091,442 · App. 07/613,581
Tubular articles
Inventor:
Richard Milner
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Nov 28, 1990
Inventor
Richard Milner
Assignee (at issue)
Smith & Nephew PLC
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.