Granted Patent
Utility
US 6,463,322 · App. 09/832,247
Combination referential and differential amplifier for medical signal monitoring
Inventors:
William Lutz, Daniel J. Lombardi
Patented Case
View Patent ↗
Granted: Oct 8, 2002
Filed: Apr 10, 2001
Inventors
William Lutz
Daniel J. Lombardi
Assignee (at issue)
Viasys Healthcare, 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.