Granted Patent
Utility
US 6,832,663 · App. 09/941,132
Ear coupler
Inventors:
Jessica Ash Warring, Alfred Christian Walton
Patented Case
View Patent ↗
Granted: Dec 21, 2004
Filed: Aug 27, 2001
Inventors
Jessica Ash Warring
Alfred Christian Walton
Assignee (at issue)
Natus Medical Incorporated
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.