Granted Patent
Utility
US 5,679,987 · App. 08/551,573
Method and device for obtaining connectivity information of telecommunication facilities
Inventor:
Hideharu Ogawa
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Nov 1, 1995
Inventor
Hideharu Ogawa
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.