Granted Patent
Utility
US 4,964,155 · App. 07/323,374
Programmable threshold alert
Inventor:
Debbie Pinard
Patented Case
View Patent ↗
Granted: Oct 16, 1990
Filed: Mar 14, 1989
Inventor
Debbie Pinard
Assignee (at issue)
Mitel 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.