Granted Patent
Utility
US 6,580,903 · App. 09/789,783
Circuit and method for recording and playing back voice and other sounds in digital mobile radio devices
Inventors:
Werner Hein, Johann Steger, Jürgen Paulus
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Feb 20, 2001
Inventors
Werner Hein
Johann Steger
Jürgen Paulus
Assignee (at issue)
Infineon Technologies AG
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.