Granted Patent
Utility
US 5,516,489 · App. 08/109,274
Apparatus for testing peroxide concentrations in sterilants
Inventors:
Hans L. Melgaard, Louis A. Larson
Patented Case
View Patent ↗
Granted: May 14, 1996
Filed: Aug 19, 1993
Inventors
Hans L. Melgaard
Louis A. Larson
Assignee (at issue)
Despatch Industries Limited Partnership
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.