Granted Patent
Utility
US 5,473,278 · App. 08/196,552
Filter circuit including a switch circuit inserted between input terminal and RC filter
Inventor:
Hirohiko Shibata
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Feb 15, 1994
Inventor
Hirohiko Shibata
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.