Granted Patent
Utility
US 5,185,787 · App. 07/832,720
Multiple party telephone control system with random dialing for polling
Inventor:
Ronald A. Katz
Patented Case
View Patent ↗
Granted: Feb 9, 1993
Filed: Feb 7, 1992
Inventor
Ronald A. Katz
Assignee (at issue)
FIRST DATA RESOURCES, LLC.
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.