Granted Patent
Utility
US 4,429,004 · App. 06/273,800
Light-reflecting body
Inventor:
Franz Breitenfellner
Patented Case
View Patent ↗
Granted: Jan 31, 1984
Filed: Jun 15, 1981
Inventor
Franz Breitenfellner
Assignee (at issue)
Ciba-Geigy
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.