Granted Patent
Utility
US 5,579,799 · App. 08/529,552
Collapsible shade structure
Inventor:
Yu Zheng
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Sep 18, 1995
Inventor
Yu Zheng
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.