Granted Patent
Utility
US 6,803,815 · App. 10/252,578
Amplitude modulation demodulation circuit
Inventor:
Osamu Nishikido
Patented Case
View Patent ↗
Granted: Oct 12, 2004
Filed: Sep 24, 2002
Inventor
Osamu Nishikido
Assignee (at issue)
MITSUBISHI ELECTRIC 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.