Granted Patent
Utility
US 6,270,204 · App. 09/042,031
Ink pen assembly
Inventors:
Douglas J. Barrett, Matthew Dolan, Carlos Gomez, Thomas Hagerty
Patented Case
View Patent ↗
Granted: Aug 7, 2001
Filed: Mar 13, 1998
Inventors
Douglas J. Barrett
Matthew Dolan
Carlos Gomez
Thomas Hagerty
Assignee (at issue)
Iris Graphics, 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.