Granted Patent
Utility
US 6,389,935 · App. 09/029,056
Acoustic display screen
Inventors:
Henry Azima, Martin Colloms, Neil John Harris
Patented Case
View Patent ↗
Granted: May 21, 2002
Filed: Jul 8, 1998
Inventors
Henry Azima
Martin Colloms
Neil John Harris
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.