Granted Patent
Utility
US 6,504,802 · App. 09/349,029
Tracking control method and storage unit
Inventors:
Wataru Tsukahara, Shigenori Yanagi
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Jul 7, 1999
Inventors
Wataru Tsukahara
Shigenori Yanagi
Assignee (at issue)
Fujitsu Limited
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.