Granted Patent
Utility
US 6,540,045 · App. 09/670,207
Method for manufacturing an ear device and ear device
Inventors:
Christoph Widmer, Joydeep Dutta
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Sep 25, 2000
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.