Granted Patent
Utility
US 6,225,792 · App. 09/313,440
Method and apparatus for the supply of energy to a hearing device
Inventors:
Enrique Marcello Blumenkrantz, Erik Rasmussen
Patented Case
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Granted: May 1, 2001
Filed: May 18, 1999
Inventors
Enrique Marcello Blumenkrantz
Erik Rasmussen
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.