Granted Patent
Utility
US 6,791,813 · App. 10/226,313
Communication line surge protecting system
Inventors:
Takashi Shikano, Kiyotaka Ando, Chikashi Okabayashi
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Aug 23, 2002
Inventors
Takashi Shikano
Kiyotaka Ando
Chikashi Okabayashi
Assignees (at issue)
NTT Docomo Kyushu, Inc.
SANKOSHA 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.