Granted Patent
Utility
US 4,776,826 · App. 07/167,537
Chain saw drive sprocket with wear mark indicators
Inventor:
Gary M. Scott
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Mar 14, 1988
Inventor
Gary M. Scott
Assignee (at issue)
Blount, 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.