Granted Patent
Utility
US 6,131,320 · App. 08/949,914
Floor sign
Inventors:
John David Eberle, Daniel J. D'Arcy, Donald L. Davis
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Oct 14, 1997
Inventors
John David Eberle
Daniel J. D'Arcy
Donald L. Davis
Assignee (at issue)
American Allsafe Company
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.