Granted Patent
Utility
US 6,827,178 · App. 10/373,906
Method for manufacturing an ear device and ear device
Inventors:
Christoph Widmer, Joydeep Dutta
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Feb 25, 2003
Inventors
Christoph Widmer
Joydeep Dutta
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.