Granted Patent
Utility
US 5,119,871 · App. 07/505,374
Opacified pearlescent multilayer louver for vertical blinds
Inventor:
Paul R. Schwaegerle
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: Apr 6, 1990
Inventor
Paul R. Schwaegerle
Assignee (at issue)
B. F. Goodrich 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.