Granted Patent
Utility
US 5,699,997 · App. 08/636,014
Foldable playyard connection device
Inventor:
Li-chu Chen Huang
Patented Case
View Patent ↗
Granted: Dec 23, 1997
Filed: Apr 22, 1996
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.