Granted Patent
Utility
US 5,162,689 · App. 07/694,516
Single-phase uni-directional acoustic wave transducer
Inventors:
Frederick M. Fliegel, David Penunuri, Thomas S. Hickernell
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: May 1, 1991
Inventors
Frederick M. Fliegel
David Penunuri
Thomas S. Hickernell
Assignee (at issue)
Motorola, 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.