Granted Patent
Utility
US 6,735,319 · App. 09/340,767
Behind-the-ear hearing aid
Inventor:
Andi Vonlanthen
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Jun 28, 1999
Inventor
Andi Vonlanthen
Assignee (at issue)
Phonak AG
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.