Granted Patent
Utility
US 5,249,223 · App. 07/637,249
Call-load-control arrangement for an emergency-call-answering center
Inventor:
Vincent D. Vanacore
Patented Case
View Patent ↗
Granted: Sep 28, 1993
Filed: Jan 3, 1991
Inventor
Vincent D. Vanacore
Assignee (at issue)
AT&T Bell Laboratories
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.