Granted Patent
Utility
US 6,040,955 · App. 08/287,477
Self servo writing file
Inventors:
Dana H. Brown, Thomas C. Christensen, Earl A. Cunningham, Wayne A. Rogelstad
Patented Case
View Patent ↗
Granted: Mar 21, 2000
Filed: Aug 8, 1994
Inventors
Dana H. Brown
Thomas C. Christensen
Earl A. Cunningham
Wayne A. Rogelstad
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.