Granted Patent
Utility
US 6,431,974 · App. 09/537,892
Acoustic wind band
Inventors:
Paul A. Tetley, Charles Gans
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Mar 29, 2000
Inventors
Paul A. Tetley
Charles Gans
Assignee (at issue)
MetPro 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.