Granted Patent
Utility
US 5,655,174 · App. 08/651,309
System with ambient sensor for estimating printing supply consumption
Inventor:
Mark Hirst
Patented Case
View Patent ↗
Granted: Aug 5, 1997
Filed: May 22, 1996
Inventor
Mark Hirst
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.