Granted Patent
Utility
US 6,549,598 · App. 09/338,234
Clock signal extraction circuit
Inventor:
Norio Kumaki
Patented Case
View Patent ↗
Granted: Apr 15, 2003
Filed: Jun 22, 1999
Inventor
Norio Kumaki
Assignee (at issue)
Advantest 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.