Granted Patent
Utility
US 5,596,776 · App. 08/563,729
Collapsible safeguard rail structure
Inventor:
Li-chu Chen Huang
Patented Case
View Patent ↗
Granted: Jan 28, 1997
Filed: Nov 28, 1995
Inventor
Li-chu Chen Huang
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.