Granted Patent
Utility
US 6,219,921 · App. 09/117,900
Chain saw guide bar with cleaning means
Inventor:
Karl-Olof Pettersson
Patented Case
View Patent ↗
Granted: Apr 24, 2001
Filed: Oct 19, 1998
Inventor
Karl-Olof Pettersson
Assignee (at issue)
KAPMAN 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.