Granted Patent
Utility
US 5,497,357 · App. 07/288,329
Shock-resistant flextensional transducer
Inventors:
David K. Dahlstrom, Theodore R. Kazmar
Patented Case
View Patent ↗
Granted: Mar 5, 1996
Filed: Dec 23, 1988
Inventors
David K. Dahlstrom
Theodore R. Kazmar
Assignee (at issue)
AlliedSignal, 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.