Granted Patent
Utility
US 6,273,627 · App. 09/688,659
Expandable writing instrument
Inventors:
Gregor Mittersinker, Richard Joseph D'Amico, Kevin Browning
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Oct 16, 2000
Inventors
Gregor Mittersinker
Richard Joseph D'Amico
Kevin Browning
Assignee (at issue)
A.T.X. International, 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.