Granted Patent
Utility
US 5,144,751 · App. 07/742,902
Method and apparatus for controlling saw chain tension
Inventor:
Johann Weber
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Aug 9, 1991
Inventor
Johann Weber
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.