Granted Patent
Utility
US 6,501,438 · App. 09/745,542
Multiband helical antenna
Inventors:
Peter Nevermann, Sheng-Gen Pan
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Dec 21, 2000
Inventors
Peter Nevermann
Sheng-Gen Pan
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.