Granted Patent
Utility
US 4,514,852 · App. 06/405,687
Process for protected transmission of digital signals
Inventors:
Manfred Hanni, Josef Brusch
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Aug 5, 1982
Inventors
Manfred Hanni
Josef Brusch
Assignee (at issue)
Siemens Aktiengesellschaft
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.