Granted Patent
Utility
US 6,443,479 · App. 09/805,052
Locking device with safety arrangement for collapsable stroller
Inventor:
Ying Huang
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Mar 14, 2001
Inventor
Ying Huang
Assignee (at issue)
LERADO (ZHONG SHAN) INDUSTRIAL CO., LTD.
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.