Granted Patent
Utility
US 4,577,637 · App. 06/630,570
Flexible metal radiopaque indicator and plugs for catheters
Inventor:
Richard L. Mueller
Patented Case
View Patent ↗
Granted: Mar 25, 1986
Filed: Jul 13, 1984
Inventor
Richard L. Mueller
Assignee (at issue)
Argon Medical Corp.
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.