Granted Patent
Utility
US 6,043,678 · App. 08/905,497
Input circuit
Inventor:
Seiichi Watarai
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Aug 4, 1997
Inventor
Seiichi Watarai
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.