Granted Patent
Utility
US 6,409,487 · App. 09/738,947
Shoe with inflatable bladder and secure deflation valve
Inventor:
Jai Baek
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Dec 15, 2000
Inventor
Jai Baek
Assignee (at issue)
DC SHOES, INC.
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.