Granted Patent
Utility
US 5,943,782 · App. 08/761,385
Method for hardening selected regions of a guide bar for chain saws, and guide bar produced thereby
Inventors:
Arvo Leini, Erik Sundstrom, Mats Lundstrom
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Dec 6, 1996
Inventors
Arvo Leini
Erik Sundstrom
Mats Lundstrom
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.