Granted Patent
Utility
US 6,621,134 · App. 10/067,299
Vacuum sealed RF/microwave microresonator
Inventor:
Shayne M. Zurn
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Feb 7, 2002
Inventor
Shayne M. Zurn
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.