Granted Patent
Utility
US 6,667,639 · App. 10/270,682
Frequency multiplying system having a plurality of output frequencies
Inventor:
Yukihiro Oyama
Patented Case
View Patent ↗
Granted: Dec 23, 2003
Filed: Oct 16, 2002
Inventor
Yukihiro Oyama
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.