Granted Patent
Utility
US 6,438,872 · App. 09/438,935
Expandable shoe and shoe assemblies
Inventors:
Kwon Dong Chil, Harry Miller
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Nov 12, 1999
Inventors
Kwon Dong Chil
Harry Miller
Assignee (at issue)
Harry Miller Co., LLC
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.