Granted Patent
Utility
US 5,111,184 · App. 07/659,619
Tamper-proof device for detecting opening and closing of a secure container
Inventors:
Harley Heaton, Michael R. Arneson, Guy P. LaRocca
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Feb 25, 1991
Inventors
Harley Heaton
Michael R. Arneson
Guy P. LaRocca
Assignee (at issue)
Atlantic Research Group 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.