Granted Patent
Utility
US 5,189,566 · App. 07/494,047
Method and apparatus for recovering data
Inventors:
Thomas C. Christensen, Weldon M. Hanson, James Joseph Mosser, Donald Earl Vosberg
Patented Case
View Patent ↗
Granted: Feb 23, 1993
Filed: Mar 15, 1990
Inventors
Thomas C. Christensen
Weldon M. Hanson
James Joseph Mosser
Donald Earl Vosberg
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.