Granted Patent
Utility
US 5,644,633 · App. 08/407,504
Automatic telephone dialer system
Inventors:
James C. Kaufeld, Jacek Zagorski, Teresa Linne Bialik, Russell Dennis Rufer
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Mar 20, 1995
Inventors
James C. Kaufeld
Jacek Zagorski
Teresa Linne Bialik
Russell Dennis Rufer
Assignee (at issue)
Digitran 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.