Granted Patent
Utility
US 5,329,294 · App. 07/975,388
User refillable ink jet cartridge and method for making said cartridge
Inventors:
Susan P. Ontawar, Fred Keen
Patented Case
View Patent ↗
Granted: Jul 12, 1994
Filed: Nov 12, 1992
Inventors
Susan P. Ontawar
Fred Keen
Assignee (at issue)
Repeat-O-Type Manufacturing Company, 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.