Granted Patent
Utility
US 6,360,455 · App. 09/569,643
Pack boot with retractable crampons
Inventor:
Sang Rok Seo
Patented Case
View Patent ↗
Granted: Mar 26, 2002
Filed: May 12, 2000
Inventor
Sang Rok Seo
Assignee (at issue)
Rocky Shoes & Boots, 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.