Granted Patent
Utility
US 5,682,183 · App. 08/332,544
Ink level sensor for an inkjet print cartridge
Inventors:
John M. Wade, Christopher J. Shultz, Betsy Huntingdon
Patented Case
View Patent ↗
Granted: Oct 28, 1997
Filed: Oct 31, 1994
Inventors
John M. Wade
Christopher J. Shultz
Betsy Huntingdon
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.