Granted Patent
Utility
US 6,034,580 · App. 09/298,812
Coplanar waveguide filter
Inventors:
Bert C. Henderson, Malkiat S. Nijjar
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: Apr 23, 1999
Inventors
Bert C. Henderson
Malkiat S. Nijjar
Assignee (at issue)
Endgate LLC
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.