Granted Patent
Utility
US 4,883,065 · App. 07/271,903
Micropotential analyzer--a Holter system with comprehensive analysis capability for very low amplitude electrocardiographic signals and method
Inventor:
George J. Kelen
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Nov 15, 1988
Inventor
George J. Kelen
Assignee (at issue)
Del Mar Avionics, 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.