Granted Patent
Utility
US 5,627,722 · App. 08/349,239
Single high voltage supply for use in a multiple developer electrophotographic printer
Inventor:
B. Mark Hirst
Patented Case
View Patent ↗
Granted: May 6, 1997
Filed: Dec 5, 1994
Inventor
B. 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.