Granted Patent
Utility
US 6,653,912 · App. 10/268,198
RF and microwave duplexers that operate in accordance with a channel frequency allocation method
Inventors:
John Robinson, Xiao-Peng Liang
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Oct 10, 2002
Inventors
John Robinson
Xiao-Peng Liang
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.