Granted Patent
Utility
US 5,559,869 · App. 08/590,675
Carbon microphone interface for a modem
Inventor:
Steven Weir
Patented Case
View Patent ↗
Granted: Sep 24, 1996
Filed: Jan 29, 1996
Inventor
Steven Weir
Assignee (at issue)
HARRIS CORPORATION
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.