Granted Patent
Utility
US 6,573,463 · App. 09/904,495
Structure of electronic instrument having operation keys and manufacturing method thereof
Inventor:
Shuichi Ono
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Jul 16, 2001
Inventor
Shuichi Ono
Assignee (at issue)
NEC 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.