Granted Patent
Utility
US 5,915,302 · App. 08/931,237
Printer ink exchange apparatus
Inventors:
Yasuyuki Baba, Arifumi Okamoto, Kunio Niuchi
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: Sep 16, 1997
Inventors
Yasuyuki Baba
Arifumi Okamoto
Kunio Niuchi
Assignee (at issue)
MITSUBISHI KOGYO KABUSHIKI KAISHA
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.