Granted Patent
Utility
US 6,781,721 · App. 09/945,667
Communication apparatus with relay function and relay method
Inventors:
Kiyoshi Toyoda, Kumi Okada
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Sep 5, 2001
Inventors
Kiyoshi Toyoda
Kumi Okada
Assignee (at issue)
Panasonic Communications Co., Ltd.
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.