Granted Patent
Utility
US 6,137,883 · App. 09/087,125
Telephone set having a microphone for receiving an acoustic signal via keypad
Inventors:
Kevin D. Kaschke, David L. Bond
Patented Case
View Patent ↗
Granted: Oct 24, 2000
Filed: May 30, 1998
Inventors
Kevin D. Kaschke
David L. Bond
Assignee (at issue)
Motorola, Inc.
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.