Granted Patent
Utility
US 4,896,575 · App. 07/357,900
Sawchain
Inventor:
Erik Sundstrom
Patented Case
View Patent ↗
Granted: Jan 30, 1990
Filed: May 25, 1989
Inventor
Erik Sundstrom
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.