Granted Patent
Utility
US 5,854,709 · App. 08/881,595
Chameleonic cube corners
Inventor:
Dennis I. Couzin
Patented Case
View Patent ↗
Granted: Dec 29, 1998
Filed: Jun 24, 1997
Inventor
Dennis I. Couzin
Assignee (at issue)
Stimsonite 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.