Granted Patent
Utility
US 5,872,837 · App. 08/672,186
System and method for transmitting data and commands using a telephone
Inventor:
William J. Johnson
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Jun 27, 1996
Inventor
William J. Johnson
Assignee (at issue)
MCI WorldCom. 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.