Granted Patent
Utility
US 4,633,894 · App. 06/664,260
Umbrella rib tipping system
Inventor:
Toshio Okuda
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Oct 24, 1984
Inventor
Toshio Okuda
Assignee (at issue)
TOTES LLC
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.