Granted Patent
Utility
US 6,490,447 · App. 09/043,690
Cordless telecommunications system
Inventors:
Rolf Biedermann, Josef Baumeister
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Mar 26, 1998
Inventors
Rolf Biedermann
Josef Baumeister
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.