Granted Patent
Utility
US 6,791,437 · App. 10/239,373
Symmetric dual mode surface acoustic wave filter having symmetric housing connections
Inventors:
Peter Hagn, Peter Selmeier
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Feb 25, 2003
Inventors
Peter Hagn
Peter Selmeier
Assignee (at issue)
EPCOS AG
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.