Granted Patent
Utility
US 4,342,159 · App. 06/170,647
Metatarsal guard safety shoe
Inventor:
Robert Glen Edwards
Patented Case
View Patent ↗
Granted: Aug 3, 1982
Filed: Jul 21, 1980
Inventor
Robert Glen Edwards
Assignee (at issue)
Interco Incorporated
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.