Granted Patent
Utility
US 5,825,409 · App. 08/977,181
Flexible disk mode observer
Inventors:
Yiping Ma, David E. Jones
Patented Case
View Patent ↗
Granted: Oct 20, 1998
Filed: Nov 24, 1997
Inventors
Yiping Ma
David E. Jones
Assignee (at issue)
IO-Mega Holding 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.