Granted Patent
Utility
US 6,657,521 · App. 10/132,949
Microwave waveguide filter having rectangular cavities, and method for its fabrication
Inventors:
Paul J. Tatomir, James M. Barker, Keith N. Loi, Richard L. Bennett, Louis W. Hendrick, Rolf Kich
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Apr 26, 2002
Inventors
Paul J. Tatomir
James M. Barker
Keith N. Loi
Richard L. Bennett
Louis W. Hendrick
Rolf Kich
Assignee (at issue)
The Boeing Company
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.