Granted Patent
Utility
US 4,348,758 · App. 06/156,298
Digital debouncing and storage apparatus for use in a telephone switching system
Inventor:
Joseph E. Sutherland
Patented Case
View Patent ↗
Granted: Sep 7, 1982
Filed: Jun 4, 1980
Inventor
Joseph E. Sutherland
Assignee (at issue)
International Standard Electric 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.