Granted Patent
Utility
US 5,339,292 · App. 07/952,812
Acoustic transducer
Inventors:
William J. Brown, Bogdan Cherek, Henry T. Viuhko
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Sep 28, 1992
Inventors
William J. Brown
Bogdan Cherek
Henry T. Viuhko
Assignee (at issue)
Milltronics Ltd.
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.