Granted Patent
Utility
US 5,901,926 · App. 08/908,325
Collapsible flying structures
Inventor:
Yu Zheng
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Aug 7, 1997
Inventor
Yu Zheng
Assignee (at issue)
Patent Category Corp.
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.