Granted Patent
Utility
US 5,226,425 · App. 07/983,798
Portable ECG monitor/recorder
Inventor:
William H. Righter
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Nov 30, 1992
Inventor
William H. Righter
Assignee (at issue)
Ralin, 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.