Granted Patent
Utility
US 5,734,400 · App. 08/550,905
Method and apparatus for refilling ink jet unit printer cartridges
Inventors:
Bruce Brunetti, Wolfgang Witz, Walter Barry Wexler
Patented Case
View Patent ↗
Granted: Mar 31, 1998
Filed: Oct 31, 1995
Inventors
Bruce Brunetti
Wolfgang Witz
Walter Barry Wexler
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.