Granted Patent
Utility
US 6,799,385 · App. 10/374,608
Abrasion resistant earth working surface and weld stud
Inventor:
Clark Champney
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: Feb 26, 2003
Inventor
Clark Champney
Assignee (at issue)
NELSON STUD WELDING, 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.