Granted Patent
Utility
US 6,683,513 · App. 10/000,471
Electronically tunable RF diplexers tuned by tunable capacitors
Inventors:
Khosro Shamsaifar, Jian Xu
Patented Case
View Patent ↗
Granted: Jan 27, 2004
Filed: Oct 24, 2001
Inventors
Khosro Shamsaifar
Jian Xu
Assignee (at issue)
Paratek Microwave, Inc.
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.