Granted Patent
Utility
US 5,489,930 · App. 08/056,101
Ink jet head with internal filter
Inventor:
Jeffrey J. Anderson
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Apr 30, 1993
Inventor
Jeffrey J. Anderson
Assignee (at issue)
Tektronix, 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.