Granted Patent
Utility
US 6,701,640 · App. 10/047,576
Self draining shoe
Inventor:
Kiyotaka Nakano
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Jan 14, 2002
Inventor
Kiyotaka Nakano
Assignee (at issue)
Wolverine World Wide, 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.