Granted Patent
Utility
US 4,368,357 · App. 06/206,782
Bypass apparatus for use in secure communication systems
Inventor:
Richard J. Gurak
Patented Case
View Patent ↗
Granted: Jan 11, 1983
Filed: Nov 14, 1980
Inventor
Richard J. Gurak
Assignee (at issue)
International Telephone and Telegraph 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.