Granted Patent
Utility
US 5,894,250 · App. 08/821,246
Cavity resonator filter structure having improved cavity arrangement
Inventors:
Lasse Beli Ravaska, Kimmo Antero Kyllonen, Guanghua Huang, Lenny Russell Hill
Patented Case
View Patent ↗
Granted: Apr 13, 1999
Filed: Mar 20, 1997
Inventors
Lasse Beli Ravaska
Kimmo Antero Kyllonen
Guanghua Huang
Lenny Russell Hill
Assignee (at issue)
ADC Solitra, 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.