Granted Patent
Utility
US 6,755,462 · App. 09/966,872
Cushioned seat and back support for collapsible chair
Inventor:
Edward Zheng
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Sep 27, 2001
Inventor
Edward 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.