Granted Patent
Utility
US 4,423,291 · App. 06/231,452
Method for operating a speech recognition device
Inventors:
Eberhard Zwicker, Wolfgang Daxer
Patented Case
View Patent ↗
Granted: Dec 27, 1983
Filed: Feb 4, 1981
Inventors
Eberhard Zwicker
Wolfgang Daxer
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.