Granted Patent
Utility
US 5,887,067 · App. 08/644,834
Audio communication system for a life safety network
Inventors:
Hilario Costa, Elizabeth Meyer-Horton, Donald J. Munn, Andrew Novetzke, Michael Slack
Patented Case
View Patent ↗
Granted: Mar 23, 1999
Filed: May 10, 1996
Inventors
Hilario Costa
Elizabeth Meyer-Horton
Donald J. Munn
Andrew Novetzke
Michael Slack
Assignee (at issue)
Federal Signal 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.