Granted Patent
Utility
US 5,331,876 · App. 07/921,947
Saw blade for cutting metal
Inventor:
Robert C. Hayden, Sr.
Patented Case
View Patent ↗
Granted: Jul 26, 1994
Filed: Jul 30, 1992
Inventor
Robert C. Hayden, Sr.
Assignee (at issue)
SANDVIK AB
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.