Granted Patent
Utility
US 5,576,097 · App. 08/428,801
High brightness durable retro-reflecting microspheres and method of making the same
Inventor:
Charles W. Wyckoff
Patented Case
View Patent ↗
Granted: Nov 19, 1996
Filed: Apr 24, 1995
Inventor
Charles W. Wyckoff
Assignee (at issue)
Brite-Line Industries, 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.