Granted Patent
Utility
US 6,693,588 · App. 10/111,503
Method for calibrating an electronically phase-controlled group antenna in radio communications systems
Inventor:
Johannes Schlee
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Apr 24, 2002
Inventor
Johannes Schlee
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.