Granted Patent
Utility
US 6,794,944 · App. 10/118,249
Lock detection circuit
Inventor:
Yoshitaka Hirai
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Apr 9, 2002
Inventor
Yoshitaka Hirai
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.