Granted Patent
Utility
US 6,178,249 · App. 09/335,419
Attachment of a micromechanical microphone
Inventors:
Jarmo Hietanen, Outi Rusanen
Patented Case
View Patent ↗
Granted: Jan 23, 2001
Filed: Jun 17, 1999
Inventors
Jarmo Hietanen
Outi Rusanen
Assignee (at issue)
Nokia Mobile Phones Ltd.
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.