Granted Patent
Utility
US 5,991,644 · App. 08/563,944
Folding portable communications device
Inventor:
Yutaka Ogawa
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Nov 29, 1995
Inventor
Yutaka Ogawa
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.