Granted Patent
Utility
US 6,590,888 · App. 09/260,049
Cellar system, mobile portable apparatus, base station apparatus, optimum path detecting method, and apparatus thereof
Inventor:
Manabu Ohshima
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Mar 2, 1999
Inventor
Manabu Ohshima
Assignee (at issue)
NEC 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.