Granted Patent
Utility
US 6,009,149 · App. 09/115,304
Automated calling system with database updating by callee
Inventor:
Al Langsenkamp
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Jul 14, 1998
Inventor
Al Langsenkamp
Assignee (at issue)
Sigma/Micro 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.