Granted Patent
Utility
US 6,285,518 · App. 09/140,340
Life/wear monitoring for magnetic tape
Inventor:
James Zweighaft
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Aug 26, 1998
Inventor
James Zweighaft
Assignee (at issue)
Exabyte 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.