Granted Patent
Utility
US 4,538,113 · App. 06/597,264
Switched capacitor filter
Inventor:
Charles A. Lish
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Apr 6, 1984
Inventor
Charles A. Lish
Assignee (at issue)
STANDARD MICROSYSTEMS 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.