Granted Patent
Utility
US 6,813,117 · App. 10/035,185
Shutter mechanism for a portable data storage cartridge
Inventors:
John Blair, Allen Cox, David Michael Davis
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: Jan 4, 2002
Inventors
John Blair
Allen Cox
David Michael Davis
Assignee (at issue)
International Business Machines Corporation
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.