Granted Patent
Utility
US 4,531,937 · App. 06/460,691
Introducer catheter apparatus and method of use
Inventor:
Roy Yates
Patented Case
View Patent ↗
Granted: Jul 30, 1985
Filed: Jan 24, 1983
Inventor
Roy Yates
Assignee (at issue)
Pacesetter Systems, 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.