Granted Patent
Utility
US 6,768,426 · App. 10/602,470
Position detection apparatus
Inventors:
Yasuo Nekado, Masaaki Kusumi
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Jun 23, 2003
Inventors
Yasuo Nekado
Masaaki Kusumi
Assignee (at issue)
Sony Precision Technology Inc.
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.