Granted Patent
Utility
US 5,203,623 · App. 07/921,309
Sun visor for motor vehicles
Inventors:
Lothar Viertel, Patrick Welter
Patented Case
View Patent ↗
Granted: Apr 20, 1993
Filed: Jul 29, 1992
Inventors
Lothar Viertel
Patrick Welter
Assignee (at issue)
Gebr. Happich GmbH
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.