Granted Patent
Utility
US 5,708,414 · App. 08/695,748
Sensitivity fault indication technique implemented in smoke detector system with self-diagnostic capabilities
Inventors:
Mark A. Peltier, Douglas H. Marman, Brent T. Krieger
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Aug 12, 1996
Inventors
Mark A. Peltier
Douglas H. Marman
Brent T. Krieger
Assignee (at issue)
Sentrol, Inc.
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.