Granted Patent
Utility
US 6,670,839 · App. 10/242,415
Clock monitoring apparatus
Inventor:
Takashi Kitahara
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Sep 13, 2002
Inventor
Takashi Kitahara
Assignee (at issue)
NEC Electronics 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.