Granted Patent
Utility
US 6,397,452 · App. 09/871,299
Guide bar including stump treatment
Inventors:
Karl-Erik Frosberg, Karl Olov Pettersson
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: May 30, 2001
Inventors
Karl-Erik Frosberg
Karl Olov Pettersson
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.