Granted Patent
Utility
US 6,694,038 · App. 09/386,361
Acoustic device
Inventor:
Henry Azima
Patented Case
View Patent ↗
Granted: Feb 17, 2004
Filed: Aug 31, 1999
Inventor
Henry Azima
Assignee (at issue)
New Transducers Limited
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.